Searchers gathered to scour the remote Eagle Peak area in advance of Wednesday night’s expected winter weather. Park officials did not approve their request to fly a helicopter Tuesday.

The father of a hiker who disappeared after reaching the summit of a mountain in Yellowstone National Park a month ago has been desperately trying to conduct his own search. Brian King-Henke attempted to organize a private effort to find Austin King as weather forecasters predicted a winter storm was set to hit Eagle Peak in Wyoming.

Austin King's disappearance in Yellowstone National Park has left his family grasping for answers, especially after a mysterious note was found.

Austin King-Henke spoke with family and friends via phone from the top of Yellowstone's highest summit on Sept. 17, and has not been seen or heard from since.