Borneo peat swamp forests
The Borneo peat swamp forests ecoregion, within the tropical and subtropical moist broadleaf forests biome, are on the island of Borneo, which is divided between Brunei, Indonesia and Malaysia. == Location and description == Peat swamp forests occur where waterlogged soils prevent dead leaves and wood from fully decomposing, which over time creates thick layer of acidic peat.
Source: Wikipedia — Borneo peat swamp forests (CC BY-SA 4.0)