Drilling Fields - Lost World
13 sport climbing routes at Drilling Fields - Lost World in Idaho range across 9 difficulty grades.
Photo: cifraser1, CC BY 2.0 (via Flickr)- 13 routes
- 5.4 – 5.11a
- Sport
Is Drilling Fields - Lost World open right now?
No closures listed
The National Park Service lists no closures for City of Rocks National Reserve.
As of · Source: NPS · City of Rocks National Reserve. Agencies don't list every closure — check before you go.
Best time to visit Drilling Fields - Lost World
Best months: April–June and August–October. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.
Jan
35° / 16°
8 wet
Feb
39° / 19°
7 wet
Mar
48° / 27°
6 wet
Apr
55° / 33°
7 wet
May
65° / 41°
9 wet
Jun
75° / 50°
6 wet
Jul
86° / 59°
5 wet
Aug
85° / 57°
6 wet
Sep
74° / 48°
5 wet
Oct
60° / 35°
5 wet
Nov
45° / 24°
6 wet
Dec
35° / 17°
8 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Rosette, UT, 24 mi away at 5,685 ft. The station sits about 700 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Drilling Fields - Lost World is a climbing area inside City of Rocks National Reserve in Idaho, managed by the National Park Service. It sits among a cluster of climbing areas, with The Drilling Fields and Rabbit Rock both about 0.1 mile away. The area is free to visit. The climbing here is all sport, with 13 routes ranging from 5.4 to 5.11a. The easiest is Time After Time at 5.4, and the hardest is Science Friction at 5.11a. Several of the routes were first ascended by Duane Ackerman, including True Spirit at 5.7 and Last of the Lost at 5.9. Summer is the most comfortable time to climb. Typical averages from a nearby weather station in Rosette, Utah, show July highs around 86°F with lows near 59°F, while winter highs stay around 35°F. The station sits about 660 feet lower than the reserve, so temperatures on the rocks run cooler. The South Fork Circle Creek Trail starts about 0.2 mile away, and the Bumblie Wall Trail is about 0.4 mile off. Independence Lakes Campground, roughly 9.6 miles away, is the closest place to camp.
Routes (13)
Facts about this crag
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