When I was planning my trip to South America, I had grand ambitions of travelling overland from Tierra del Fuego, at the southernmost tip of the continent, all the way up to Canada. After bimbling rather aimlessly around Asia, I wanted to undertake a grand expedition with a clear goal. However, heading straight to Ushuaia – right at the bottom of Argentina – from the UK is a lengthy and expensive journey. So my “expedition” actually started in Uruguay and I worked my way down the east of South America, journeying back north on the other side. (Spoiler: I never made it as far as Canada.) My goal was…