But unknown to the soldiers, the Navajo was already slowly perishing from thirst; the snows had melted away, and the natural cisterns pocking the surface had run dry.
So one moonless night, the Fortress Rock exiles devised a plan: They formed a human chain along the sloping rock, down to Tsaile Creek, where several American guards lay sleeping. A group of warriors crept out onto a ledge over the stream and dangled gourds from yucca ropes, dipping the containers into the cold running water. They filled gourd after gourd and steadily passed the vessels from hand to hand back up the sheer rock face to the summit. By dawn they had replenished their stores.
So what happened to them? They outlasted the siege and were never captured".
Except above from: Outside Magazine, Hampton Sides, 2006