Walking across the hot, dry lands, through saltbush and snakeweed and desert sage, the tired travelers longed for the sight of a kiss tank, a pool of water left from the last rain and its runoff in a naturally formed rock basin. Ranchers call these pools of water kiss tanks because, when such a pool is found, all creatures of the desert, as well as cattle and horses and humans, put their dry lips and thirsty mouths to its water eagerly, with a kind of passion. And they rise refreshed. Such basins ﬁlled with the water from snowmelt can also be found in mountainous regions. A basin on top of the Maiden, a sandstone spire near Boulder, Colorado, for instance, contains freshwater shrimp that have evolved to survive the dry seasons. A kiss tank is also called a tinaja, which is Spanish for a big, earthen jar.