This publication studies the potential impact of climate change on Sri Lanka's vulnerable mountain ecosystem in order to help guide sustainable adaptation strategies. It uses a mix of geographic information system mapping combined with average and projected rainfall figures to show how the mountains that make up 15% of Sri Lanka could be affected. Including a series of maps, the publication illustrates how the area faces rising drought alongside increasingly severe monsoons that could cause more floods and landslides. By showing the potential impact of climate change, it aims to help assess both future investments and strategies to cut disaster risk and enhance environmental sustainability in the biodiverse area.