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
East Sioux Falls, South Dakota to the incorporation of East Sioux Falls as a municipality. Numerous structures were built in East Sioux Falls including worker's cottages, post office, town hall, depot, school house, general store, hotel, grain elevator, stable, saloons and jail. The remains of several buildings are still visible within the nature area. The quarried stone was cut into building stones and paving blocks and shipped to construction projects throughout the country. The pink quartzite was superior in quality to other stones and possessed a coloring which was extremely delicate and pleasing to the eye. The stone was used in the construction of several