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
Darbys Falls, New South Wales the village association to defy the GNB and hold an official renaming ceremony in 2013. Darbys Falls, New South Wales Darbys Falls is a small village situated 15 km east of Cowra, New South Wales. In 2011, there were 316 people living in Darbys Falls, including 5 indigenous people. The population was 51.9% are male and 48.1% are female. Located near the village is a public astronomical observatory. There is no school in the village, with Wyangala Dam Public School servicing primary aged students. Secondary students travel to Cowra. It is situated on the Lachlan River between Wyangala and Cowra.