She was the guardian of the worlds, but HER world was dead.

Even here, on the black terrace before the forgotten mountain retreat of Asti, it was possible to smell the dank stench of burning Memphir, to imagine that the dawn wind bore upward from the pillaged city the faint tortured cries of those whom the barbarians of Klem hunted to their prolonged death. Indeed it was time to leave--

Varta, last of the virgin Maidens of Asti, shivered. The scaled and wattled creature who crouched beside her thigh turned his reptilian head so that golden eyes met the aquamarine ones set slantingly at a faintly provocative angle in her smooth ivory face.

“We go--?”

She nodded in answer to that unvoiced question Lur had sent into her brain, and turned toward the dark cavern which was the mouth of Asti’s last dwelling place. Once, more than a thousand years before when the walls of Memphir were young, Asti had lived among men below. But in the richness and softness which was trading Memphir, empire of empires, Asti found no place. So He and those who served Him had withdrawn to this mountain outcrop. And she, Varta, was the last, the very last to bow knee at Asti’s shrine and raise her voice in the dawn hymn--for Lur, as were all his race, was mute.

Even the loot of Memphir would not sate the shaggy headed warriors who had stormed her gates this day. The stairway to Asti’s Temple was plain enough to see and there would be those to essay the steep climb hoping to find a treasure which did not exist. For Asti was an austere God, delighting in plain walls and bare altars. His last priest had lain in the grave niches these three years, there would be none to hold that gate against intruders.

Varta passed between tall, uncarved pillars, Lur padding beside her, his spine mane erect, the talons on his forefeet clicking on the stone in steady rhythm. So they came into the innermost shrine of Asti and there Varta made graceful obeisance to the great cowled and robed figure which sat enthroned, its hidden eyes focused upon its own outstretched hand.

And above the flattened palm of that wide hand hung suspended in space the round orange-red sun ball which was twin to the sun that lighted Erb. Around the miniature sun swung in their orbits the four worlds of the system, each obeying the laws of space, even as did the planets they represented.

“Memphir has fallen,” Varta’s voice sounded rusty in her own ears. She had spoken so seldom during the last lonely months. “Evil has risen to overwhelm our world, even as it was prophesied in Your Revelations, O, Ruler of Worlds and Maker of Destiny. Therefore, obeying the order given of old, I would depart from this, Thy house. Suffer me now to fulfill the Law--”

Three times she prostrated her slim body on the stones at the foot of Asti’s judgment chair. Then she arose and, with the confidence of a child in its father, she laid her hand palm upward upon the outstretched hand of Asti. Beneath her flesh the stone was not cold and hard, but seemed to have an inner heat, even as might a human hand. For a long moment she stood so and then she raised her hand slowly, carefully, as if within its slight hollow she cupped something precious.

[Illustration]

And, as she drew her hand away from the grasp of Asti, the tiny sun and its planets followed, spinning now above her palm as they had above the statue’s. But out of the cowled figure some virtue had departed with the going of the miniature solar system; it was now but a carving of stone. And Varta did not look at it again as she passed behind its bulk to seek a certain place in the temple wall, known to her from much reading of the old records.

Having found the stone she sought, she moved her hand in a certain pattern before it so that the faint radiance streaming from the tiny sun, gleamed on the grayness of the wall. There was a grating, as from metal long unused, and a block fell back, opening a narrow door to them.

Before she stepped within, the priestess lifted her hand above her head and when she withdrew it, the sun and planets remained to form a diadem just above the intricate braiding of her dull red hair. As she moved into the secret way, the five orbs swung with her, and in the darkness there the sun glowed richly, sending out a light to guide their feet.

They were at the top of a stairway and the hollow clang of the stone as it moved back into place behind them echoed through a gulf which seemed endless. But that too was as the chronicles had said and Varta knew no fear.

How long they journeyed down into the maw of the mountain and, beyond that, into the womb of Erb itself, Varta never knew. But, when feet were weary and she knew the bite of real hunger, they came into a passageway which ended in a room hollowed of solid rock. And there, preserved in the chest in which men born in the youth of Memphir had laid them, Varta found that which would keep her safe on the path she must take. She put aside the fine silks, the jeweled cincture, which had been the badge of Asti’s service and drew on over her naked body a suit of scaled skin, gemmed and glistening in the rays of the small sun. There was a hood to cover the entire head, taloned gloves for the hands, webbed, clawed coverings for the feet--as if the skin of a giant, man-like lizard had been tanned and fashioned into this suit. And Varta suspected that that might be so--the world of Erb had not always been held by the human-kind alone.

There were supplies here too, lying untouched in ageless containers within a lizard-skin pouch. Varta touched her tongue without fear to a powdered restorative, sharing it with Lur, whose own mailed skin would protect him through the dangers to come.

She folded the regalia she had stripped off and laid it in the chest, smoothing it regretfully before she dropped the lid upon its shimmering color. Never again would Asti’s servant wear the soft stuff of His Livery. But she was resolute enough when she picked up the food pouch and strode forward, passing out of the robing chamber into a narrow way which was a natural fault in the rock unsmoothed by the tools of man.

But when this rocky road ended upon the lip of a gorge, Varta hesitated, plucking at the throat latch of her hood-like helmet. Through the unclouded crystal of its eye-holes she could see the sprouts of yellow vapor which puffed from crannies in the rock wall down which she must climb. If the records of the Temple spoke true, these curls of gas were death to all lunged creatures of the upper world. She could only trust that the cunning of the scaled hood would not fail her.

The long talons fitted to the finger tips of the gloves, the claws of the webbed foot coverings clamped fast to every hand and foot hold, but the way down was long and she caught a message of weariness from Lur before they reached the piled rocks at the foot of the cliff. The puffs of steamy gas had become a fog through which they groped their way slowly, following a trace of path along the base of the cliff.

Time did not exist in the underworld of Erb. Varta did not know whether it was still today, or whether she had passed into tomorrow when they came to a cross roads. She felt Lur press against her, forcing her back against a rock.

“There is a thing coming--” his message was clear.

And in a moment she too saw a dark hulk nosing through the vapor. It moved slowly, seeming to balance at each step as if travel was a painful act. But it bore steadily to the meeting of the two paths.

“It is no enemy--” But she did not need that reassurance from Lur. Unearthly as the thing looked it had no menace.

With a last twist of ungainly body the creature squatted on a rock and clawed the clumsy covering it wore about its bone-thin shoulders and domed-skull head. The visage it revealed was long and gray, with dark pits for eyes and a gaping, fang-studded, lipless mouth.

“Who are you who dare to tread the forgotten ways and rouse from slumber the Guardian of the Chasms?”

The question was a shrill whine in her brain, her hands half arose to cover her ears--

“I am Varta, Maiden of Asti. Memphir has fallen to the barbarians of the Outer Lands and now I go, as Asti once ordered--.”

The Guardian considered her answer gravely. In one skeleton claw it fumbled a rod and with this it now traced certain symbols in the dust before Varta’s webbed feet. When it had done, the girl stooped and altered two of the lines with a swift stroke from one of her talons. The creature of the Chasm nodded its misshapen head.

“Asti does not rule here. But long, and long, and long ago there was a pact made with us in His Name. Pass free from us, woman of the Light. There are two paths before you--.”

The Guardian paused for so long that Varta dared to prompt it.

“Where do they lead, Guardian of the Dark?”

“This will take you down into my country,” it jerked the rod to the right. “And that way is death for creatures from the surface world. The other--in our old legends it is said to bring a traveler out into the upper world. Of the truth of that I have no proof.”

“But that one I must take,” she made slight obeisance to the huddle of bones and dank cloak on the rock and it inclined its head in grave courtesy.

With Lur pushing a little ahead, she took the road which ran straight into the flume-veiled darkness. Nor did she turn to look again at the Thing from the Chasm world.

They began to climb again, across slimed rock where there were evil trails of other things which lived in this haunted darkness. But the sun of Asti lighted their way and perhaps some virtue in the rays from it kept away the makers of such trails.

When they pulled themselves up onto a wide ledge the talons on Varta’s gloves were worn to splintered stubs and there was a bright girdle of pain about her aching body. Lur lay panting beside her, his red-forked tongue protruding from his foam ringed mouth.

“We walk again the ways of men,” Lur was the first to note the tool marks on the stone where they lay. “By the Will of Asti, we may win out of this maze after all.”

Since there were no signs of the deadly steam Varta dared to push off her hood and share with her companion the sustaining power she carried in her pouch. There was a freshness to the air they breathed, damp and cold though it was, which hinted of the upper world.

The ledge sloped upwards, at a steep angle at first, and then more gently. Lur slipped past her and thrust head and shoulders through a break in the rock. Grasping his neck spines she allowed him to pull her through that narrow slit into the soft blackness of a surface night. They tumbled down together, Varta’s head pillowed on Lur’s smooth side, and so slept as the sun and worlds of Asti whirled protectingly above them.

A whir of wings in the air above her head awakened Varta. One of the small, jewel bright flying lizard creatures of the deep jungle poised and dipped to investigate more closely the worlds of Asti. But at Varta’s upflung arm it uttered a rasping cry and planed down into the mass of vegetation below. By the glint of sunlight on the stone around them the day was already well advanced. Varta tugged at Lur’s mane until he roused.

There was a regularity to the rocks piled about their sleeping place which hinted that they had lain among the ruins left by man. But of this side of the mountains both were ignorant, for Memphir’s rule had not run here.

“Many dead things in times past,” Lur’s scarlet nostril pits were extended to their widest. “But that was long ago. This land is no longer held by men.”

Varta laughed cheerfully. “If here there are no men, then there will rise no barbarian hordes to dispute our rule. Asti has led us to safety. Let us see more of the land He gives us.”

There was a road leading down from the ruins, a road still to be followed in spite of the lash of landslip and the crack of time. And it brought them into a cup of green fertility where the lavishness of Asti’s sowing was unchecked by man. Varta seized eagerly upon globes of blood red fruit which she recognized as delicacies which had been cultivated in the Temple gardens, while Lur went hunting into the fringes of the jungle, there dining on prey so easily caught as to be judged devoid of fear.

The jungle choked highway curved and they were suddenly fronted by a desert of sere desolation, a desert floored by glassy slag which sent back the sun beams in a furnace glare. Varta shaded her eyes and tried to see the end of this, but, if there was a distant rim of green beyond, the heat distortions in the air concealed it.

Lur put out a front paw to test the slag but withdrew it instantly.

“It cooks the flesh, we can not walk here,” was his verdict.

Varta pointed with her chin to the left where, some distance away, the mountain wall paralleled their course.

“Then let us keep to the jungle over there and see if it does not bring around to the far side. But what made this--?” She leaned out over the glassy stuff, not daring to touch the slick surface.

“War.” Lur’s tongue shot out to impale a questing beetle. “These forgotten people fought with fearsome weapons.”

“But what weapon could do this? Memphir knew not such--.”

“Memphir was old. But mayhap there were those who raised cities on Erb before the first hut of Memphir squatted on tidal mud. Men forget knowledge in time. Even in Memphir the lords of the last days forgot the wisdom of their earlier sages--they fell before the barbarians easily enough.”

“If ever men had wisdom to produce this--it was not of Asti’s giving,” she edged away from the glare. “Let us go.”

But now they had to fight their way through jungle and it was hard--until they reached a ridge of rock running out from the mountain as a tongue thrust into the blasted valley. And along this they picked their slow way.

“There is water near--,” Lur’s thought answered the girl’s desire. She licked dry lips longingly. “This way--,” her companion’s sudden turn was to the left and Varta was quick to follow him down a slide of rock.

Lur’s instinct was right, as it ever was. There was water before them, a small lake of it. But even as he dipped his fanged muzzle toward that inviting surface, Lur’s spined head jerked erect again. Varta snatched back the hand she had put out, staring at Lur’s strange actions. His nostrils expanded to their widest, his long neck outstretched, he was swinging his head back and forth across the limpid shallows.

“What is it--?”

“This is no water such as we know,” the scaled one answered flatly. “It has life within it.”

Varta laughed. “Fish, water snakes, your own distant kin, Lur. It is the scent of them which you catch--”

“No. It is the water itself which lives--and yet does not live--” His thought trailed away from her as he struggled with some problem. No human brain could follow his unless he willed it so.

Varta squatted back on her heels and began to look at the water and then at the banks with more care. For the first time she noted the odd patches of brilliant color which floated just below the surface of the liquid. Blue, green, yellow, crimson, they drifted slowly with the tiny waves which lapped the shore. But they were not alive, she was almost sure of that, they appeared more a part of the water itself.

Watching the voyage of one patch of green she caught sight of the branch. It was a drooping shoot of the turbi, the same tree vine which produced the fruit she had relished less than an hour before. Above the water dangled a cluster of the fruit, dead ripe with the sweet pulp stretching its skin. But below the surface of the water--