Can you imagine what Martin Hansen must have felt like in 1887 after following mountain lion tracks into what would later be known as Hansen Cave for the first time? Sure, climbing into that hole seemed like a good idea a few minutes ago, but now completely enveloped in darkness and looking back toward the natural entrance which he had just crawled through surely Martin wondered what exactly he had gotten himself into. Well, literally anyway, it was the first of three caves waiting to be discovered in the area. These caves were later joined by man-made tunnels to make touring the caves easier. But what exactly is a cave anyway? In the simplest of terms a cave may be defined as any natural cavity large enough to allow human entry. However, as you will soon see Hansen, Middle, and Timpanogos Caves are much more than your average holes in the ground.