Any chance you have hydro to any out bulldogs? Shed etc? looks like the wires are just leading underground to run below the surface to another location.
We have a pool, and a shed that's definitely not set up for water. I know those wires are wrapped around the gas line for some reason, but there's another one that's identical that's just in the middle of nothing. They're both basically a plastic tube in the ground with some heavy duty wires running from the top down into the tube. Here's the other one.
https://docs.google.com/open?id=0B_cfe-RggztSWGxQOUYtX05ZTUk
Again, no idea what it is. The previous owners were in the place for 28 years before we were and were do-it-yourself-ers who sometimes gave up on their project apparently. My favorite is the random black hose that comes out from under the wall and apparently does nothing.
https://docs.google.com/open?id=0B_cfe-RggztSXzV6M1cyS1NHMGs
