Biff and I often discover drains and inlets carved into the sandstone walls .
There isn't much to say about doing recon work. Its fun, good exercise and an essential part of urban exploration.
While poking around a particular cliff, I saw a grouping of rocks that looked interesting and decided to check it out. No more than 2 feet from the rocks I fell through a hole that was covered with branches and leaves and I inadvertently stumbled upon yet another cave without trying.