“Warm water isn’t very satisfying to drink,” Lofosa grumbled.

“I am sorry, freelady, but Trench Park hasn’t the resources to haul a refrigerator around for anyone’s convenience,” Radnal said.

Despite Lofosa’s complaint, she and Evillia both drank regularly. Radnal scratched his head, wondering how the Krepalgan girls could seem so fuzzbrained but still muddle along without getting into real trouble.

Evillia had even brought along some flavoring packets, so while everyone else poured down blood-temperature water, she had blood-temperature fruit punch instead. The crystals also turned the water the color of blood. Radnal decided he could do without them.

They got to the Bitter Lake a little before noon. It was more a salt marsh than a lake; the Dalorz River did not drop enough water off the ancient continental shelf to keep a lake bed full against the tremendous evaporation in the eternally hot, eternally dry Bottomlands. Salt pans gleamed white around pools and patches of mud.

“Don’t let the donkeys eat anything here,” Radnal warned. “The water brings everything from the underground salt layer to the surface. Even Bottomlands plants have trouble adapting.”

That was emphatically true. Despite the water absent everywhere else in Trench Park, the landscape round the Bitter Lake was barren even by Bottomlands standards. Most of the few plants that did struggle to grow were tiny and stunted.

Benter vez Maprab, whose sole interest seemed to be horticulture, pointed to one of the exceptions. “What’s that, the ghost of a plant abandoned by the gods?”

“It looks like it,” Radnal said: the shrub had skinny, almost skeletal branches and leaves. Rather than being green, it was white with sparkles that shifted as the breeze shook it. “It’s a saltbush, and it’s found only around the Bitter Lake. It deposits the salts it picks up from ground water as crystals on all its aboveground parts. That does two things: it gets rid of the salt, and having the reflective coating lowers the plant’s effective temperature.”