You see a waterfall.
Location
Tiquanda, some Dwarf caves or other caves, southern Brimstone Bug Cave, Rookgaard (here), Dawnport, Realm of Dreams, Roshamuul bridge.
Notes
When a river comes across a sudden height difference the stream of water falls down, creating a Waterfall. Sometimes you can swim over them.
Dropped By
No creatures drop waterfalls.