Probably craters caused by bombs or explosives
USA /
Utah /
Grantsville /
World
/ USA
/ Utah
/ Grantsville
World / United States / Utah
military, bomb/explosion crater

According to the Benchmark's "Utah Road and Recreation Atlas," this is within the Utah Test and Training Range. The circular features could have been made by the disposal of ordnance or the dropping of bombs.
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Wikipedia article: http://en.wikipedia.org/wiki/Utah_Test_and_Training_Range
Nearby cities:
Coordinates: 40°51'36"N 113°11'18"W
- Boundary corner of the Utah Test and Training Range 2.8 km
- Clive Disposal Cells uranium waste disposal 19 km
- Mock Airfield 47 km
- Abandoned WWII Airstrip 74 km
- Michael Army Airfield 74 km
- Wendover Airport (Former Wendover Air Force Base) (EDV/KEDV) 74 km
- Dugway Proving Ground 76 km
- Carr Facility 80 km
- Tower Grid 84 km
- Target "S" Grid 88 km
- bomb craters 18 km
- Stansbury Bay 48 km
- Silver Island 50 km
- Bonneville Salt Flats 55 km
- Stansbury Island 58 km
- Stansbury Mountains 62 km
- Pond system to Extract Potash & Magnesium Coloride from Salt Brine 64 km
- Great Salt Lake 64 km
- Onaqui Mountains 89 km
- Deep Creek Mountain Range 123 km