There is a bonfire just before the entrance to the Abyss.
From here you can teleport to and from any other bonfire in the DLC.
Following the tunnel leads to a larger cavern with a ramp leading down ending in a fresh water pool with a skeleton and some salmon.
It is divided into two sections: Gloomreach Cavern and Gloomreach Hive.
Gloomreach is unlike most other cave systems, as the explorer discovers shortly after entering.
No rain had come in nine months, and the smoke from 150,000 acres of wildfire darkens the air.
I persuade him to join me on a mission that evening: a full-moon hike to the Langford Hot Springs on the Rio Grande, a series of large pools that collect in the foundations of a long-gone early 20th-century bathhouse.