John Colter, the explorer who discovered Yellowstone Park claimed that he once escaped from the Indians by diving into a beaver pond and coming tip inside a beaver lodge.

• 发现黄石公园的探险者约翰·科尔特宣称他曾潜水进入河狸居住的池塘并爬进河狸的巢穴从而逃脱印第安人的追捕。