Bai

One thing about the bais that I hadn't fully taken on board while reading about them was that they tend to be waterlogged because they are usually associated with marshes, streams or springs. […] venturing into the bai, but […] plunging into the bai because […]

Gorillas (and other wildlife) frequent such bais, which are waterlogged and sunny, because of the sodium-rich sedges and asters that grow beneath the open sky.