Boundary monument 501
USA /
Montana /
Opheim /
World
/ USA
/ Montana
/ Opheim
World / United States / Montana
boundary marker
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Coordinates: 48°59'59"N 106°38'47"W
- Boundary monument 605 241 km
- Boundary monument 613 259 km
- Boundary monument 614 262 km
- Boundary monument 617 270 km
- Montana-North Dakota-South Dakota Tripoint 392 km
- Idaho - Montana - Wyoming border Tri-point 605 km
- Nebraska-Wyoming-South Dakota Tripoint 697 km
- ID-UT-WY Tri-Border Point 851 km
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- State Line Marker 1328 km
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- R.M. Mankota No. 045 40 km
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- R.M. Gravelbourg No. 104 102 km
- R.M. Glen Bain No. 105 106 km
- R.M. Excel No. 071 108 km
- R.M. Bengough No. 040 116 km
- R.M. Terrell No. 101 132 km