Illinois
DifficultBuffalo Rock State Park Illinois River Bluffs Trail
Sandstone bluffs and ancient effigy mounds
Trail Type: Technical 4x4
Illinois
ModerateCrab Orchard National Wildlife Refuge Coal Mine Heritage Circuit
Strip mine haul roads through reclaimed coal country
Illinois
ModerateIllinois Beach State Park Dune Ridge Technical Loop
Lake Michigan dune technical through coastal prairie
Illinois
DifficultStarved Rock State Park LaSalle Canyon Technical Loop
Hidden canyons above the Illinois River
Illinois
DifficultApple River Canyon Technical Loop
Canyon country technical in the Prairie State
Greenland
ExtremeNordostrundingen Military Station Access Road
Ultimate Arctic challenge to Earth's remote northeast
Greenland
ExpertManiitsoq Sukkertoppen Ice Cap Access Road
Extreme ice cap access for Arctic expeditions
Greenland
DifficultSøndre Strømfjord Abandoned DEW Line Station Circuit
Cold War radar stations across Arctic tundra.
Greenland
ExpertKangerlussuaq Inland Ice Edge Research Circuit
Edge of the ice sheet expedition route
Greenland
ExpertUpernavik Glacier Bay Mining Road
Iron ore ghost road through active glacier zone