The Tevatron is the largest accelerator at Fermilab and is housed in an underground tunnel which forms a circle 4 miles in circumference. An earth berm, a string of service buildings a road and a ring of ponds containing cooling water are the suface indicators of the tunnel's location. The area inside this circle has been set aside for a prairie reconstruction project, but also contains some nice wetlands and small woodlots. Naturally, this ensemble provides some excellent habitat for birds. Note, however, that members of the public require permisssion to access this area. The following links give more detail about what can be seen where in this area.

• Main Ring Lake
• Main Ring Moat
• Lake Logo
• Main ring Savannah