hueco
WAY-koh
A natural hole or cavity in rock, especially in the desert Southwest — a hollow in a boulder or cliff face that collects rainwater and holds it. Huecos are critical water sources for wildlife in arid terrain. In climbing, a hueco is a pocket or scoop in the rock face used as a hold.
Etymology
Spanish, meaning hollow or hole.
Notes
Hueco Tanks in West Texas is named for the rock basins that have made the site a critical water source and human gathering place for thousands of years.
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