I thought I would share this, I found it very interesting. This happened about two years ago, after work I topped the hill to our little forage pond and it was almost completely drained!(.10 acre) I found a hole I could stick my arm into, I ran a tape measure as far as I could, it read 21'! .I had to know what was down there so I ordered one of those snake cameras and got my son to hook it up. Here are just a few of those pictures.http://[Linked Image from i.imgur.com].
http://[Linked Image from i.imgur.com]
http://[Linked Image from i.imgur.com]