Stelios Valtzis

Stelios Valtzis

Glen Canyon National Recreation Area encompasses the area around Lake Powell and lower Cataract Canyon in Utah and Arizona, covering 1,254,429 acres (5,076 km2) of mostly desert. The Glen Canyon NRA was established in 1972 "to provide for public use and enjoyment and to preserve the area's scientific, historic, and scenic features." The stated purpose of

Rainbow Bridge National Monument is often described as the world's highest natural bridge. The span of Rainbow Bridge according to definition by the Natural Arch and Bridge Society in 2007 resulted in a value of 234 feet (71 m). At the top it is 42 feet (13 m) thick and 33 feet (10 m) wide. The bridge, which is of cultural importance to a number of

Grandstaff Canyon is a canyon in southern Utah. It is part of the Colorado River watershed. A trailhead which gives hiking access into the canyon is located directly adjacent to Utah State Route 128 (SR‑128). The Morning Glory Arch is located in the canyon about 2.5 miles (4.0 km) from the trailhead and has a length of 943 feet (287 m). The

Aloba Arch is the name of a natural arch located in Chad. Large natural arches are somewhat rare outside the southern and western regions of China and the Colorado Plateau of the southwest United States. Chad's Ennedi Plateau has a geology similar to the Colorado Plateau and has produced a number of natural arches and similar landforms, although

Cedar Breaks National Monument is a U.S. National Monumen. Cedar Breaks is a natural amphitheater, stretching across 3 miles (4.8 km), with a depth of over 2,000 feet (610 m). The elevation of the rim of the amphitheater is over 10,000 feet (3,000 m) above sea level. The rock of the amphitheater is more eroded than, but otherwise

Rainbow Point

Kolob Arch is a natural arch in Zion National Park, Utah. The Natural Arch and Bridge Society (NABS) considers Kolob Arch to be the sixth longest natural arch in the world. In 2006, the Society measured the span at 287.4 ± 2 feet (87.6 m), which is slightly shorter than the Landscape Arch in Arches National Park. Differences in measuring technique or

Devils Garden is an area of Arches National Park, that features a series of rock fins and arches formed by erosion. The Devils Garden Trail, including more primitive sections and spurs, meanders through the area for 7.2 mi (11.6 km). The trailhead leads directly to Landscape Arch after a 0.8 mi (1.3 km) outbound hike, while Tunnel Arch and Pine

Landscape Arch is the longest of the many natural rock arches located in Arches National Park, Utah, United States. The arch is among many in the Devils Garden area in the north of the park. Landscape Arch was named by Frank Beckwith who explored the area in the winter of 1933–1934 as the leader of an Arches National Monument scientific expedition. The arch