A mezzoloth named Abi was encountered there and offered guidance deeper into the plane.
Abi had not seen Loki or Idunn, despite the party seeking them.
Abi is immune to the acid pits and cutting foliage of Cathrys, allowing her to guide others through it.
The first major encounter in Cathrys involved black puddings rising from acid pools.
The terrain itself functioned as an active hazard because of acid and razor grass.
The party also encountered the Arch of Justice within Cathrys, where each traveler had to confess a deepest truth in order to pass onward.
Abi described Minethys as the next lower layer, a cold and sandblasted wasteland.
History
At the Arch of Justice, each member of the party revealed a hidden truth before being allowed onward into Cathrys.
Upon arriving deeper within the plane, they immediately discovered its hostile terrain and were attacked by black puddings emerging from the acid pools.
Abi later informed them that they were in Cathrys and that escape from the plane was nearly impossible.
The party later followed Abi through Cathrys to her razor-grass hut, where she spoke of her shame and reluctance to approach The Steading.
From there, Abi guided the party safely through hidden acid pits until the red jungle gave way to the green fields of The Steading.