Quicksand was a deadly peril in unknown lands, according to pop culture in the late 1900s. But quicksand is a real thing and its creation (and your ability to escape from it) is a lesson in soil dynamics.
The photo of a mint-green, pristine pool in Lechuguilla cave circulating on social media resulted in expressions of speculation, wonder, and a desire to visit. For many reasons, the cave area must remain off-limits and isolated.