Unit 371 is a Summit County subunit covering the country around Frisco, Dillon, and Silverthorne—the I-70 corridor north of the Tenmile Range with the Williams Fork Mountains to the north and the Eagles Nest Wilderness on the western flank. Elevations climb from about 9,000 feet on the Dillon Reservoir benches to 13,000 feet on the higher Williams Fork and Gore Range ridges. The terrain is dramatic high-country: lodgepole pine on the lower slopes (with significant beetle-kill standing dead—a real factor in stalking and downed timber complications), aspen pockets on the mid-slopes, dense subalpine spruce-fir in the higher reaches, and alpine tundra above treeline. Dillon Reservoir anchors the southern part of the unit and pulls heavy summer recreation. The Eagles Nest Wilderness on the western boundary keeps a chunk of high country motorless. White River National Forest dominates with the Eagles Nest Wilderness on the west and the Ptarmigan Peak Wilderness on the eastern flank above the Williams Fork. I-70 cuts east-west through Frisco and the Dillon Dam area; CO-9 runs north-south through Silverthorne and out to Kremmling; US-6 climbs over Loveland Pass. Silverthorne, Dillon, and Frisco all have full services—gas, food, motels, processors, gear shops—at full resort pricing. Cell service is excellent in the valley corridors and dies in the wilderness. Recreation pressure is heavy along trails and FS roads; hunters who pack into Eagles Nest or climb past the easy access still find elk and good mule deer. Late October weather can dump significant snow at these elevations and shut high-country roads fast.