SANTA CLARA COUNTY, Calif. (KRON) – Cal Fire’s Santa Clara Unit is working on putting out a fire on Mt. Umunhum, in the Santa Cruz Mountains in Santa Clara County.

The grass fire is approximately 2-3 acres, according to a tweet, and “extremely difficult access in steep terrain.” The fire is spreading slowly, the tweet continued, tagging the San Jose and Santa Clara County fire departments.

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CORRECTION: Oct. 5 at 1:03 p.m. – The name of Mt. Umunhum was misspelled in the original version of this report. It has been corrected.