Han trotted along as fast as he dared, not knowing how long it would take him to walk through the mountain to the western slope of Gray Lady.

Once, a nearly transparent cobweb of magic stretched across the corridor, and Han barely managed to skid to a stop in time. That particular barrier had not been in his notes. It looked different—cruder than the others he’d seen. He disabled it with a standard fix.

From then on, the way was open, with only trivial traps and hazards. He’d half expected to find natural barricades—from cave-ins over the past thousand years—but these tunnels were well lit and clear of dust and rock debris.

Han passed steaming pools, their banks frosted with mineral stains, bubbling hot springs that fed underground rivers, steam geysers that stank of sulfur. He saw no one, and no real evidence that anyone had passed this way in a millennium. Currents of fresh air brushed his face from unseen sources.

Some of the branching tunnels were mapped, some not, their entrances obscured under veils of magic revealed only by the charm Crow had given him. Where do they go? Han wondered. Nobody would tunnel through solid rock for no reason.

But he had no charms to get him through those barriers, and no time for it anyway.

As the tunnel sloped gently upward, side tunnels and intersections came more often. Magical barriers reappeared—simpler, less-elegant charms.

The tunnel ends in an apparent dead end, a large chamber centered by a hot spring, Han’s notes said. The walls opened and the ceiling soared, and he was there.

The pool before him resembled the bottomless springs scattered throughout the Fells—places where the fires within the earth came close to the surface. Deep and clear, rippling with heat, it looked like it could boil the flesh off a carcass in a matter of minutes.

The spring is a mirage, Han’s notes said. You’ll find a stone staircase leading down into the water on the far side. At the bottom of the spring, there’s a door leading into the cellars of the Council House.

Han circled the spring. Extending his hand, conjuring more light, he saw steps extending down into the clear water. The moist heat of the spring scalded his exposed skin. He could smell the sulfur bubbling up from its depths, see the steam rising from its surface. If it was a mirage, it was convincing.

He fingered his amulet, debating. What if it was real? What if Han’s note-taking was faulty? What if something had changed in the past thousand years?

He didn’t have time to dither about it if he didn’t want to be late. Sending up a prayer to any god who might be listening to someone like him, he stepped down into the pool, searching with his foot for the first step, his heart hammering, every nerve firing.