Camping#Fishing#Rafting#RV Camping#Swimming#Tent CampingFishing Access Site#Public Access Site#Recreation Area CampgroundToiletsdbo2026-04-04T17:01:53Big Rock Fishing Access off of I-90 Exit 470 and drive into Big Timber 1.4 miles to Old Boulder Road. Turn south and continue 3.5 miles.Big Rock Fishing Access off of I-90 Exit 470 and drive into Big Timber 1.4 miles to Old Boulder Road. Turn south and continue 3.5 miles.fwprg52@mt.gov45.8343543-109.9540644BillingsMontana Fish, Wildlife & ParksMT2300 Lake Elmo Drive59105Big Rock Fishing Access does permit camping. There is a 7 day limit. Toilets and access for camp trailers is available. Open all season. It is a remote site along the Boulder River.0406-247-2940All YearBig Timber132511|http://www.visitmt.com|Y#11|http://www.wintermt.com|#32|http://www.lewisandclark.state.mt.us|#94|http://indiannations.visitmt.com|Big Rock Fishing Access SiteYELLOWSTONEYellowstoneFishing Access SiteBig TimberMTOld Bridget Road59011http://fwp.mt.gov