Tahai Lake is a small blackwater lake in the peat-swamp country north of Palangka Raya. It is not a grand wilderness expedition, but it gives an easy look at the dark, tannin-rich water, wooden walkways, and still forest edges that are part of Central Kalimantan's lowland landscape.
Come for a slow hour rather than a full day. It pairs well with nearby orangutan and river excursions, especially if you want a low-effort stop where the mood is more local picnic spot than polished attraction.