Guyana the dryer savannah areas in the south-west; and the smallest interior lowlands (interior savannah) consisting mostly of mountains that gradually rise to the Brazilian border. Some of Guyana's highest mountains are Mount Ayanganna (), Monte Caburaí () and Mount Roraima ( – the highest mountain in Guyana) on the Brazil-Guyana-Venezuela tripoint border, part of the Pakaraima range. Mount Roraima and Guyana's table-top mountains (tepuis) are said to have been the inspiration for Sir Arthur Conan Doyle's 1912 novel "The Lost World". There are also many volcanic escarpments and waterfalls, including Kaieteur Falls which is believed to be the largest water
Valley Falls, Oregon moved approximately one mile west to the junction of U.S. Route 395 and Oregon Route 31. The Valley Falls post office was closed in 1943. The unincorporated community of Valley Falls is located at the junction of U.S. Route 395 and Oregon Route 31 in the high desert country of Lake County in south-central Oregon. There are only five structures at the site. The main business is a combined gas station and store, located on the west side of the highway, south of the junction. There is also a recreational vehicle park and a guest ranch nearby. Valley Falls is