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
South American U20 Championships in Athletics Medals are awarded for individuals and relay team members for the first three places in each event. Trophies are awarded to teams in each category (male and female) with the highest total number of cumulative points in the entire competition. In addition, a trophy will be given to the country for the overall title. A trophy is also presented to both a male and a female athlete for the most outstanding performance. South American U20 Championships in Athletics The South American Junior Championships in Athletics are the South American championships in the sport of athletics which is open for those