Mole Gap to Reigate Escarpment and there are well developed river cliffs where alluvial fans have diverted the River Mole against the valley sides. Mole Gap to Reigate Escarpment Mole Gap to Reigate Escarpment is a biological and geological Site of Special Scientific Interest west of Reigate in Surrey. It is a Geological Conservation Review site and a Special Area of Conservation. Part of it is a Nature Conservation Review site, Grade I. Two small private nature reserves in the site are managed by the Surrey Wildlife Trust, Dawcombe and Fraser Down. This eight mile long site on the North Downs contains an outstanding range
Surprise Valley, Modoc County Surprise Valley, Modoc County Surprise Valley is a valley in California, about 60 miles in length from north to south. Locals refer to the area as the Tricorner Region because of the region's location at the intersection of California, Oregon, and Nevada state lines. The valley is east of the Modoc County seat of Alturas. The area is part of the Great Basin which extends across most of the northern half of Nevada. Most of the valley is over 4,000 feet above mean sea level (AMSL), and could be characterized as a high altitude desert valley. A series of alkaline