Covering+overhead
131Mesa Verde National Park — Mesa Verde redirects here. For other uses, see Mesa Verde (disambiguation). Mesa Verde National Park IUCN Category II (National Park) …
132Oil sands — The Athabasca oil sands in Alberta, Canada, are a very large source of bitumen, which can be upgraded to synthetic crude oil. Bituminous sands, colloquially known as oil sands or tar sands, are a type of unconventional petroleum deposit. The… …
