Update: Boundary Fire in Mariposa County – Oct. 28 status

Published Oct 28, 2025 #Boundary fire

Updated: 1:52 p.m. Oct. 28

First discovered: 25 days ago, 5:31 p.m. Oct. 3

Initial location: Mariposa County, Calif.

Fire type: Wildfire

Fire name: Boundary

Boundary Fire initially started 5:31 p.m. Oct. 3 in Mariposa County, California.

It has been burning on federal land managed by the National Park Service for 25 days. Currently, there is no data on the containment status of the fire and the cause has yet to be determined.

Source: National Interagency Fire Center