What are canyons?

Some articles on canyons, canyon:

Clifty Falls State Park - Canyons
... Clifty Creek Canyon traverses the entire north-south length of the state park ... The upper rim of the canyon at the north end of the park is 800 feet (240 m) above sea level, descending to the valley of the Ohio River which is 500 feet (150 m) above sea level ... Two other major canyons enter Clifty Creek Canyon from the east, they are Deans Branch (Tunnel Falls) and Hoffman Branch (Hoffman Falls) ...
Laguna Canyon - Recreation
... Laguna Canyon forms the center section of an approximately 17,500-acre (71 km2) strip of wilderness preserve running northeast-southwest along the Pacific coast ... Most of the canyon is covered by Laguna Coast Wilderness, which extends over 6,500 acres (26 km2) ... is bordered on the south by Aliso and Wood Canyons Regional Park, and on its north by Crystal Cove State Park ...
Sayago - Geography
... caused by the Duero and Tormes rivers canyons ... Its borders are, consequently, well defined, specially to the north (Duero canyon separates Sayago from Aliste), to the west (Duero canyon separates Sayago from Portugal) and to ... Duero canyons are especially deep in the stretch shared with Portugal, as the erosion found better conditions to act than in previous zones ...
Canyons (novel) - Adaptations
... After reviewing the audio book of Canyons Peter Coyote.com said that the abridgement of canyons "does justice to the original story," and it "does not overload the listener." Publishers ...
Santiago Canyon, California - History
... Within the canyons, geology students will find excellent examples of exfoliation, in which rock layers peel back like layers of an onion, and of frost wedging, in which ice trapped in a crack ... years ago, the highest points surrounding the canyons are Santiago Peak at 5,689 feet (1,734 m) and Modjeska Peak at 5,481 feet (1,671 m) ... The first people to live in the canyons were Native Americans (the Acjachemem) ...