Found this one looking for ideas for my box turtle setup, and thought this would work well(with some changes) for tegus.
http://www.austinsturtlepage.com/world_of_turtles/Habitat Gallery/Private Setups/ysqgk/index.html
http://www.austinsturtlepage.com/world_of_turtles/Habitat Gallery/Private Setups/ysqgk/index.html