the cluster a curving row of them ran along the southern crest of the hollow.
A flight of shattered, cyclopean steps lifted to a ledge and here a crumbling fortress stood.
Irresistibly did the ruins seem a colossal hag, flung prone, lying listlessly, helplessly, against the barrier’s base. The huddled lower ranks were the legs, the cluster the body, the upper row an outflung arm and above the neck of the stairway the ancient fortress, rounded and with two huge ragged apertures in its northern front was an aged, bleached and withered head staring, watching.
I looked at Drake—the spell of the bowl was heavy upon him, his face drawn. The Chinaman and Tibetan were murmuring, terror written large upon them.
“A hell of a joint!” Drake turned to me, a shadow of a grin lightening the distress on his face. “But I’d rather chance it than go back. What d’you say?”
I nodded, curiosity mastering my oppression. We stepped over the rim, rifles on the alert. Close behind us crowded the two servants and the ponies.
The vale was shallow, as I have said. We trod the fragments of an olden approach to the green tunnel so the descent was not difficult. Here and there beside the path upreared huge broken blocks. On them I thought I could see faint tracings as of carvings—now a suggestion of gaping, arrow-fanged dragon jaws, now the outline of a scaled body, a hint of enormous, batlike wings.
Now we had reached the first of the crumbling piles that stretched down into the valley’s center.
Half fainting, I fell against Drake, clutching to him for support.
A stream of utter hopelessness was racing upon us, swirling and eddying around us, reaching to our hearts with ghostly fingers dripping with despair. From every shattered heap it seemed to pour, rushing down the road upon us like a torrent, engulfing us, submerging, drowning.
Unseen it was—yet tangible as water; it sapped the life from every nerve. Weariness filled me, a desire to drop upon the stones, to be rolled away. To die. I felt Drake’s body quivering even as mine; knew that he was drawing upon every reserve of strength.
“Steady,” he muttered. “Steady—”
The Tibetan shrieked and fled, the ponies scrambling after him. Dimly I remembered that mine carried precious specimens; a surge of anger passed, beating back the anguish. I heard a sob from Chiu-Ming, saw him drop.
Drake stopped, drew him to his feet. We placed him between us, thrust each an arm through his own. Then, like swimmers, heads bent, we pushed on, buffeting that inexplicable invisible flood.
As the path rose, its force lessened, my vitality grew, and the terrible desire to yield and be swept away waned. Now we had reached the foot of the cyclopean stairs, now we were half up them—and now as we struggled out upon the ledge on which the watching fortress stood, the clutching stream shoaled swiftly, the shoal became safe, dry land and the cheated, unseen maelstrom swirled harmlessly beneath us.
We stood erect, gasping for breath, again like swimmers who have fought their utmost and barely, so barely, won.
There was an almost imperceptible movement at the side of the ruined portal.
Out darted a girl. A rifle dropped from her hands. Straight she sped toward me.
And as she ran I recognized her.
Ruth Ventnor!
The flying figure reached me, threw soft arms around my neck, was weeping in relieved gladness on my shoulder.
“Ruth!” I cried. “What on earth are you doing here?”
“Walter!” she sobbed. “Walter Goodwin—Oh, thank God! Thank God!”
She drew herself from my arms, catching her breath; laughed shakily.
I took swift stock of her. Save for fear upon her, she was the same Ruth I had known three years before; wide, deep blue eyes that were now all seriousness, now sparkling wells of mischief; petite, rounded and tender; the fairest skin; an impudent little nose; shining clusters of intractable curls; all human, sparkling and sweet.
Drake coughed, insinuatingly. I introduced him.
“I—I watched you struggling through that dreadful pit.” She shuddered. “I could not see who you were, did not know whether friend or enemy—but oh, my heart almost died in pity for you, Walter,” she breathed. “What can it be—there?”
I shook my head.
“Martin could not see you,” she went on. “He was watching the road that leads above. But I ran down—to help.”
“Mart watching?” I asked. “Watching for what?”
“I—” she hesitated oddly. “I think I’d rather tell you before him. It’s so strange—so incredible.”
She led us through the broken portal and into the fortress. It was more gigantic even than I had thought. The floor of the vast chamber we had entered was strewn with fragments fallen from the crackling, stone-vaulted ceiling. Through the breaks light streamed from the level above us.
We picked our way among the debris to a wide crumbling stairway, crept up it, Ruth flitting ahead. We came out opposite one of the eye-like apertures. Black against it, perched high upon a pile of blocks, I recognized the long, lean outline of Ventnor, rifle in hand, gazing intently up the ancient road whose windings were plain through the opening. He had not heard us.
“Martin,” called Ruth softly.
He turned. A shaft of light from a crevice in the gap’s edge struck his face, flashing it out from the semidarkness of the corner in which he crouched. I looked into the quiet gray eyes, upon the keen face.
“Goodwin!” he shouted, tumbling down from his perch, shaking me by the shoulders. “If I had been in the way of praying—you’re the man I’d have prayed for. How did you get here?”
“Just wandering, Mart,” I answered. “But Lord! I’m sure glad to see you.”
“Which way did you come?” he asked, keenly. I threw my hand toward the south.
“Not through that hollow?” he asked incredulously.
“And some hell of a place to get through,” Drake broke in. “It cost us our ponies and all my ammunition.”
“Richard Drake,” I said. “Son of old Alvin—you knew him, Mart.”
“Knew him well,” cried Ventnor, seizing Dick’s hand. “Wanted me to go to Kamchatka to get some confounded sort of stuff for one of his devilish experiments. Is he well?”
“He’s dead,” replied Dick soberly.
“Oh!” said Ventnor. “Oh—I’m sorry. He was a great man.”
Briefly I acquainted him with my wanderings, my encounter with Drake.
“That place out there—” he considered us thoughtfully. “Damned if I know what it is. Thought maybe it’s gas—of a sort. If it hadn’t been for it we’d have been out of this hole two days ago. I’m pretty sure it must be gas. And it must be much less than it was this morning, for then we made an attempt to get through again—and couldn’t.”
I was hardly listening. Ventnor had certainly advanced a theory of our unusual symptoms that had not occurred to me. That hollow might indeed be a pocket into which a gas flowed; just as in the mines the deadly coal damp collects in pits, flows like a stream along the passages. It might be that—some odorless, colorless gas of unknown qualities; and yet—
“Did you try respirators?” asked Dick.
“Surely,” said Ventnor. “First off the go. But they weren’t of any use. The gas, if it is gas, seems to operate as well through the skin as through the nose and mouth. We just couldn’t make it—and that’s all there is to it. But if you made it—could we try it now, do you think?” he asked eagerly.
I