RUTLAND (AP) - The U.S. Forest Service is encouraging safe snowmobiling this winter in Vermont's Green Mountain National Forest.

Weather permitting, snowmobiles are allowed on 470-miles of designated trails within the forest from Dec. 16 through April 15.

Besides urging caution on snowmobile trails, the Forest Service is warning of the dangers associated with riding, hiking and skiing on frozen water bodies.

Statewide, there are about 6,200-miles of corridor and feeder trails, including the trails in the National Forest.

The snowmobile season opened Dec. 16, but the rains and ice storm of this past weekend led to the closure of many trails across the state. Snowmobilers should check trail conditions before heading out.