The Ciudad Perdida 4-Day Hike is a gruelling but absolutely worthwhile experience, culminating in the fascinating and well preserved ancient ruin of the Ciudad Perdid (Lost City) . Set deep within the jungle, this historical site has only been accessible to the public since the 90s, and its impressive reputation among backpackers ever increases the tourist traffic using the single trail in and out. Of course, the hot and sweaty (and sometimes very muddy) nature of the 2-day-in and 2-day-out hike does keeps the tourist numbers down and manages to maintain an air of mystery and isolation on that unforgettable third day. Visit soon and you will truly have been one of the lucky few to have ever visited this amazing site and the extraordinary indigenous peoples of the Sierra Nevada de Santa Marta. – Daniel