Mount Daphnes Well
Tears of the Kingdom
Located just west of Mount Daphnes, along the Regencia River. This well serves as a Chasm that drops down into the Depths (similar to Rowan Plain Well). Although this will still only be marked as a well and not a chasm on the map even after discovering it. There is Gloom on the surface, surrounding the well. Dropping inside will take you straight to the Depths with no actual well to be found as an intermediary.
On the surface, just south of the well, Link will find some Hyrule Restoration Materials.