Fox Park is perhaps the best dark sky observing location in the Colorado/Wyoming area. It is located about 35 miles to the southwest of Laramie, WY near a location called Fox Park at latitude 41.0839N and longitude 106.1594W.
Usually there are not many other campers. However, light from other camper's Colemen lanterns and headlights from 4 wheelers running around all night can be problem on occasion (especially weekends). It can be quite cold overnight even in summer because of the high elevation (9100 ft). Summertime temperatures dropping overnight to the mid 30s are normal. It can get much colder, 14 deg F one year as I recall in early August. Be sure to bring winter gear!
Skies usually clear after a brief shower around 3-5 pm. Mosquitoes are problem in the early evenings from May through mid-July. They usually disappear after sunset because of the chilly temperatures though. Small light domes from Laramie and from Fort Collines are visible though are not yet much of a problem. Limitting magnitude is about 7.1 -- the milky way casts shadows here! The Cheyenne and Laramie astronomy clubs hosted an annual star party at this site, "Weekend Under the Stars", WUTS in August for over 25 years. Due to recent US Forest Service permits, rules, and insurance requirements, it is no longer practical
Directions to Site
Take US-287 north to I80 at Laramie, WY
Go west on I80 for about a mile and get off at the Snowy Range Road exit (#311)
Follow WY-130/Snowy Range Rd 0.8mi west and take the WY-230 fork to the left
Travel west 34mi on WY-230 (~9mi past Woods Landing) to Forest Road 512.
Turn north/right and follow dirt road ~2mi to gate at entrance to Foxpark.
Turn left and proceed west ~0.4mi; turn right onto dirt road and drive into clearing.
There are two observing fields. One is to the northand east is perhaps preferred as it is further from the road and less used by campers.
[gmap markers=big red::41.08284481313535,-106.16003036499023 |zoom=13 |center=41.0839,-106.1594 |width=500px |height=400px |control=Small |type=Hybrid]