Dol'har Hyde, a planet covered in forests, was located in the Outer Rim Territories. During the High Republic Era, Krix Kamerat's cell of Nihil marauders established a base on Dol'har Hyde. Long before the Imperial Era, specifically centuries prior, a battle involving the Nihil occurred there, leaving behind scattered starship debris. Remarkably, despite the devastation, the forests regrew, enveloping the remnants of the battle.
A smuggler named Remy discovered a Nihil Path engine within the wreckage of a marauder ship. He subsequently sold it to Beol De'Rruyet on Corellia. Doctor Chelli Aphra, a rogue archaeologist, along with Sana Starros the smuggler, journeyed to Dol'har Hyde while researching the Path engine's origins. There, they ascended a massive tree that had grown around the wreckage.
Dol'har Hyde made its debut appearance in Star Wars: Doctor Aphra comic series, specifically in the seventh issue. Alyssa Wong wrote the story, Minkyu Jung provided the pencils, and Marvel Comics published it on January 20, 2021. Later, Daniel José Older contacted Wong after seeing the planet, requesting permission to use the setting. He then incorporated it into Star Wars: The High Republic Adventures, eighth issue, with illustrations by Toni Bruno, published by IDW Publishing on September 1, 2021.