This site is a restricted area and is currently not open to the public.
The Main Ring Moat is a series of connected ponds that forms a circle just inside the Tevatron
accelerator ring. The ponds were used as a source of cooling water for the accelerator components
which means that when the Tevatron accelerator was in operation they would often remain open even
when most of the lake on site are frozen and that means that made it a good place to look for wintering
waterfowl. Main Ring road runs in a circle between the moat and the accelerator ring which allows close up
looks at both wintering and migrating waterfowl. It also provides good views of the prairie inside the ring
where, in winter,
Northern Shrikes and
Rough-legged Hawks are often found.
Driving the road can also be productive for
Lapland Longspurs and
In 1999 a male Ring-necked Duck
spent an entire summer on the north-western part of the moat and more recently a
has spent the entire winter on the south-eastern part.