I do know — surprising! But there are several hikes a few hrs in the vicinity of Ho Chi Minh City! There’s Nui Dinh which I’d only do in awesome temperature and when the all-natural swimming pools are filled. It is NOT worth it In case the temperature is crap, https://sai-gon-list26947.blogoscience.com/46100073/sai-gon-list-for-dummies