"Is it too small for my cat form?"
"Clever!" Sarraya said brightly. "Your cat form will fit in it, but it'll be cramped."
"Now, how do we get in there?" he asked.
"We can burrow into the rock," Sarraya offered. "We could look to see if it opens somewhere that we can reach, or we could try to use magic to penetrate the rock and reach the tube."
"How long would it take if we burrow?"
"I could burrow a tunnel all the way in, but I can't make it very large," she told him. "We have to figure out some way to get you into that tunnel while in cat form, and that won't be easy. If you try to shift hanging on the rock, you're going to fall."
"Can you make an opening large enough for me to squirm into, then go with the narrow tunnel the rest of the way?"
"I think I could," she said after a moment. "I'll be pretty much wiped after this, so you'd better not ask for anything else."
"Then let's try it," he said. "If anything, it'll give us a place to rest for the night, if we can't get to the top."
"Alright. Move down some so I have some room."
Tarrin did that for her, moving about ten spans from the barrier. Sarraya hovered in a position over his head, then put her hands on the stone. He felt the sudden surge of power from her, a visible aura around her for just a moment, and then there was a sound like cracking stone. The stone around her suddenly shattered. Not exactly like that, but it did instantly turn into dust, and that dust suddenly billowed out from the huge hole she had made, falling over him and making him sneeze. She disappeared from his view, going into the hollow she had just made, and then he felt another powerful surge of her power, and a crack sound that seemed to go deeply into the stone. He felt it through his paws.
What he wasn't ready for was the sudden explosion of wind that came through that newfound passageway, sending dust streaming out on that sudden, fierce wind. More than dust. Sarraya came spinning out of the new tunnel like a leaf on the wind. He felt a wild surge of panic when she spiralled into the fog and out of sight, but then he heard her wings in the fog, and saw her. Her damp body was now covered with sticking dust, making her look like she'd fell into mud. Her tiny face was drawn, and she could barely fly in a straight line. She was panting heavily, and she landed on Tarrin's back and grabbed hold of his braid, sucking in air.
"That's it for me," she wheezed. "I couldn't even conjure up a pebble right now."
"You've done enough, Sarraya," he told her. "Let me climb into the hole, and we'll rest a while before we move, alright?"
"Fine," she puffed.
The wind continued to flow through the tunnel, funneled by its small size. She had made an opening just big enough for him to slide into, and it narrowed considerably to something that would be a tight fit even for his cat form. He pulled in and shifted quickly, feeling the wind tug at his fur and dry his eyes. Sarraya flopped down against his side, and he curled up around her to keep her warm and give her something soft to rest against. "Where is this wind coming from?" he demanded in the manner of the Cat.
"The tube has to open to the outside," Sarraya said aloud weakly. "When I opened this tunnel, it gave the air in the tube a new way to go."
"Is it going to stop? I really don't want to have to crawl with it in my face."
"I have no idea," she replied. "At least thank it for blowing out the dust, or we'd have had a very unpleasant trip through it."
Tarrin hunkered down against that chilly, damp wind and waited. He needed to rest, and Sarraya definitely needed to rest. They did so for a considerable time, as he noticed the light in the cloud starting to dim. "It's getting close to sunset," he realized. "And the wind is starting to die down."
"I guess the sun was making it flow like that," Sarraya said, her voice stronger now. She had cleaned the dirt off of herself, at least after Tarrin started trying to groom her. The dust didn't taste very good, but his compulsive need to keep clean was enough to make him try to clean up his friend. "When do you want to go?"
"When you feel up to making light. It'll be pitch black in there, and I don't want to move around in there in the dark."
"Good point."
They rested a while longer, and Tarrin spent that time listening. Not to any sound, but to the eerie harmonic echoing that reverberated through him. It was a magical effect, caused by his proximity to the Conduit. It ran through the center of the rock spire, and now that he wasn't so intent on climbing, or sleeping, he had a chance to notice it. He had the feeling that if he got closer, its song would become more clear to him. It was nothing of any great importance or danger, however. He had passed through strands, even Conduits before. If he had to pass through that one, it shouldn't do any harm. He looked at Sarraya, who was sleeping against him, then out into the cloud. It started right after the entrance, hiding everything and muffling all sound, giving him the sensation that he and Sarraya were now the only people left in the world. At least in this world. That silence lulled him to put his head down, and since he had nothing else to do, he promptly went to sleep.
A considerable time after the cloud outside became dark-he wasn't sure, keeping track of time while in cat form was very difficult for him-Sarraya stirred from her nap, waking him. She yawned and stretched, then gave him a light smile. "Alright, I'm ready," she called. "I'll go first with the light. I'm smaller than you, so I shouldn't have too much trouble navigating. You can come along behind me."
Tarrin nodded, feeling the wind starting to move again. But this time, it was coming from the entrance and blowing back down the tunnel, not coming out of the tunnel. And it was only a gentle breeze, not the stiff wind that he'd felt when he crawled in. Sarraya held out her hands, and a little ball of soft white light appeared over them. She looked back at him and grinned, then started walking into the very small tunnel she created that reached what she called a lava tube.
It was a tight squeeze. Tarrin had to wriggle his way through the tunnel, leaving a little fur behind in a few places. The tunnel wasn't uniform in size, it tended to drift in size as he moved through it. Not by much, but since it was a tight fit in the first place, a small amount of shrinking meant that wriggling became necessary to get through it. He squirmed along after Sarraya for what seemed to him to be quite a while, and then she stopped. He came up behind her and saw that her tunnel joined with another tunnel that was eerily circular in diameter. Almost like a wellshaft, but it ran up and at a rather steep angle. It was a bit larger than Sarraya's tunnel, and its walls were covered with strange, glassy rock that had a rippled surface, almost like ice.
"Here we are," Sarraya said, holding her little ball of light out into the strange cave. "One lava tube."
"Why call it that?"
"That's what it is," she replied. "This used to be a volcano, a long time ago. These little tubes form in volcanos when the lava hardens on the outside, but stays liquid inside. The lava inside forms these tubes."
"I didn't know that," he said, looking at it. The air within smelled dusty, but it did move. There had to be another exit from the place, and from the feel of the air, that exit was above them.
As near as he could tell, the tube ran parallel to the outer edge of the spire, slowly curving inward. Tarrin found it very hard going, for the rippled rock was as slick as glass, and his claws had a hard time finding purchase. More than once he slipped, and slid along the glassy surface for long distances before catching himself, forcing himself to climb the same expanses of tube again and again. For every span he managed to climb, he usually slipped back half of it. The tube was large enough for Sarraya to fly, but the thin air in the tube tired her quickly, and she had given it up for simply riding on Tarrin's back like she had done when she lost her wings. The angle of the tube didn't change much as he scrabbled his way upwards, but he did notice that the slope did level out a little bit as he managed to get further into the tube.