The walk to the spring entrance took thirty minutes at Kira's pace, which was faster than Pascal's preferred travel speed. He kept up by taking a more direct route — crossing open sand patches instead of tracking the longer shaded wall route — and adjusting his coloration as each terrain transition required it. Open sand: a pale tan-gold with subtle grain-texture speckling.
Rock crossing: back to ochre-rust, slightly darker than the wall color because the flat horizontal surface captured more direct light. The scrub-shadow zone near the south wall: a mottled dark brown-green, the color of desert scrub root systems seen from above. He made each transition without thinking about it consciously, the way a skilled reader processes text.
The system that processed surface color and adjusted his scale chromatophores had been trained by three years of Sunspire Canyon terrain and was fast enough now that it ran parallel to his deliberate thinking rather than requiring it. Kira could not do this. She compensated with speed and low profile — strategies that worked for her body type but left her more dependent on luck and geography than Pascal liked.
He kept her in his peripheral vision as they traveled. They reached the south wall approach as the sun moved past overhead and began its western descent. The canyon here was narrower.
The walls rose seventy feet on both sides and closed to within twenty feet of each other at the base, creating a corridor of deep red shadow that was fifteen degrees cooler than the main canyon floor. The spring entrance was at the far end of this corridor. Pascal had been here often enough to know what it looked like when it was right.
A steady trickle of cold water over the base rock. A ring of dark, perpetually moist stone around the crack opening. The particular smell of wet rock in a dry landscape — minerally, clean, completely distinct from the dry-dust smell of the open canyon.
He reached the approach point and stopped. The smell was wrong. Not absent — there was still water here.
But mixed in with the cold-mineral smell was something else. Something dry and musky and specific. He went still.
Every scale on his body shifted simultaneously toward the darkened shadow-match of the corridor wall behind him, a full camouflage response triggered before his conscious mind had fully named what the smell meant. Kira stopped two body-lengths behind him. She was looking at him, reading his body language, understanding that something was wrong from the sudden stillness and the quality of the color shift he had just made.
She did not speak. Good. Pascal moved his right eye slowly — chameleon eyes could rotate independently, and he used this to scan the corridor ahead without moving his body at all.
The spring crack was visible at the end of the corridor, maybe thirty feet away. He could see the wet-dark base rock. The water was still flowing.
But in the shadow pool to the left of the spring crack, at the base of the narrowest section of the corridor wall, something was coiled. Multiple somethings. The light was low and the shadows were deep and the color contrast was not favorable, but Pascal had exceptional low-light vision, another adaptation of the canyon-dwelling variant, and he could count.
Four. Four sidewinder rattlesnakes, coiled in a loose cluster at the western edge of the spring corridor. Not sleeping.
The particular quality of a resting sidewinder was familiar to him — the flat, spread coil, the head tucked low. These four had their heads up. Oriented outward.
Watching the corridor approach. They had not seen him yet. They might not see him at all, depending on how long he could hold the current coloration and how still he could remain.
Pascal's surface-match was good against the corridor wall. But it was not perfect. Nothing was perfect at thirty feet in diminishing afternoon light against a predator whose heat-sensing pit organs could detect the thermal signature of a warm-bodied animal regardless of visual camouflage.
He was not warm-bodied. He was ectothermic. He produced no body heat above ambient temperature.
The sidewinders' pit organs would be reading the corridor temperature, not Pascal's body signature. He had that one advantage. He used it.
He backed out of the corridor with the precise, incremental movement that did not trigger motion-detection responses — each leg placed with deliberate care, weight shifted before the next leg moved, no sudden changes in balance or rhythm. Kira matched him, reading his movement and copying its quality without being told to. When they had cleared the corridor entrance by forty feet, Pascal spoke.
"The spring entrance is occupied," he said quietly.
"How many?" Kira asked.
"Four that I saw. There may be more inside the corridor, beyond the tight section where I stopped."
Kira was quiet for a moment.
"A nest?" she asked.
"A nest," he confirmed.
A sidewinder nest at the spring entrance was not a situation that resolved itself. Sidewinders established territory around water sources during drought conditions — the concentration of prey animals around the water source made it the most productive hunting location in the landscape. They would not leave.
Not until the water itself failed, and by then, everything else that depended on the spring would have already failed first. They moved back toward the main canyon floor, and Pascal began thinking about what would have to happen next.