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 Cross Country Championships competition schedule featured long races for senior men and women, and shorter races for junior men and women. This was expanded in 1991 with the addition of a youth competition for younger runners. Keeping in line with changes to the IAAF World Cross Country Championships, the South American championships also held senior short race competitions between 1998–2006, to complement the established long races. The short races were removed from the programme after their removal from the World Championships in 2006. Brazil have been the most successful nation at the championships: they were undefeated in both of the long race team