Plains Like Snake River Plain
High Plains
Plain
8.15
Great
South Texas Plains
Plain
7.10
Good
High Plains (USA)
Plain
6.83
Fair
Rolling Plains (Texas)
Plain
6.80
Fair
Llano Estacado
Plain
6.70
Fair
Palouse
Plain
6.61
Fair
Columbia Basin
Plain
6.37
Fair
Tigris-Euphrates Plain
Plain
9.25
Excellent
Coso Rock Art District
Petroglyph
9.10
Excellent
Altiplano
Plain
8.80
Great
Thurston Lava Tube (Nahuku)
Lava Tube
8.72
Great
Flint Hills
Plain
8.70
Great
Payunia Steppe
Steppe
8.58
Great
Lava River Cave
Lava Tube
8.48
Great
Thar Desert
Plain
8.45
Great
Plains of Abraham
Plain
8.45
Great
Great Hungarian Plain (Puszta)
Plain
8.30
Great
Piedras Marcadas Canyon Petroglyphs
Petroglyph
8.20
Great
Khuzestan Plain
Plain
8.20
Great
Hana Lava Tube (Kaeleku Caverns)
Lava Tube
8.14
Great
Patagonian Plain
Plain
8.10
Great
Crystal Ice Cave
Lava Tube
8.06
Great
Sagebrush Steppe
Steppe
8.06
Great
Salinas Valley
Plain
8.05
Great
