Mount Roraima

America’s national parks supply a number of the more familiar geological wonders, Canada and Pakistan chip in with some snow-capped hair-raisers, while Europe offers alpine rockface favourites such as the Matterhorn. But it’s South America that seems to take the breathtaking biscuit, with marvels like Agulha do Diabo (‘Devil’s Needle’) in Brazil, and Mt. Roraima – which forms the border between three countries – almost beggaring belie