whilst sticking to the guidelines, set out above, a hike or a trek through some of the vast wildernesses of the city, can be a truly breathtaking and rewarding experience, and something not to be missed on a trip to rio.   

in general all hikers, speleologists, trekker and rock-climbers should get medical insurance before undertaking any journey or activity - in fact, even basic medical treatment at rio's hospitals can quickly add up to thousands of dollars. 

furthermore, most hospitals will not provide any treatment past the initial emergency assistance without proper coverage or upfront payment.