The "Rhino Camp" at the edge of the Barisan Selatan national park forest is a great place to see the Rafflesia, the largest flower of the world. You can stay in the camp for a fee (weekend stays cost more than stays during working days) and all meals, which are prepared in the small kitchen, and coffee/tea/water are included. You can pitch a tent or just sleep in the open "living room" of the hut. The climate is way cooler than down in the valleys!