Here there was light, a dim glow from overhead. He mounted the vast gnarled bulk, a globular shape thirty feet in diameter covered with swellings and scars. It was difficult to picture it as it was, a hundred feet above the ground, for nothing at all could be seen beyond its damp mound. Although it was part of a living or once-living thing, there was no evidence of foliage. There was no nest.
The center of the crude sphere rose onto another trunk or stalk, a column about ten feet in diameter, pointing straight up as far as he could see. He was not at the top at all. The bark here was smooth and not very thick; it would be difficult to scale, even with the cleats.
Tinnerman rested for about ten minutes, lying down and putting his ear to the wood. Again the melody of the interior came to him, gentle yet deep. It brought a vision of many layers, pulsing and interweaving; of tumescence and flow, rich sap in the fibers. There was life of a sort going on within, either of the tree or in it.
He stood and mounted the central stalk. Quickly he climbed, spikes penetrating at fingers, knees and toes, bearing him ant-like up the sheer column without hesitation. The light above became brighter, though it was only the lesser gloom of a starless night on a moonless planet. Ahead the straight trunk went on and on, narrowing but never branching. Huge limbs from neighboring trees crossed nearby, bare and eerie, residual moisture shining dully; but his climb ignored them. Fifty feet; seventy-five; and now he was as high above the bole as it was above the ground. The stem to which he clung had diminished to a bare five foot diameter, but rose on toward the green upper forest.
Tinnerman's muscles bunched once more with strain. A wind came up; or perhaps he had come up to it. At this height, even the slightest tug and sway was alarming. He reached his arms around the shaft and hung on. Below, the spokes of other trees were a forest of their own, a fairyland of brush and blackness, crossing and recrossing, concealing everything except the slender reed he held. Above, the first leaves appeared, flat and heavy in the night. He climbed.
Suddenly it ended. The trunk, barely three feet through, expanded into a second bole shaped like an upsidedown pear with a five foot thickness, and stopped. Tinnerman clambered onto the top and stood there, letting his weary arms relax, balancing against the sway. There was nothing else—just a vegetable knob two hundred feet above the ground. All around, the dark verdure rustled in the breeze, and the gloom below was a quiet sea.
No branches approached within twenty feet of the knob, though the leaves closed in above, diffusing the glow of the sky. Tinnerman studied the hollow around him, wondering what kept the growth away. Was this a takeoff point for the hidden quarry?
Then it came to him, unnerving him completely. Fear hammered inside him like a bottled demon; he dared not let it out. Shaking, he began the descent.
Morning came, dim and unwilling; but it was not the wan light filtering down like sediment that woke the explorers. Nor was it the warmth of day, soaking into the tops and running down the trunks in the fashion of the night water.