PHOTOS: Underground bunker with 10,000 rounds of ammo discovered in California

January 30, 2026

From Fox News: A California man was arrested after authorities said they discovered an underground fortified bunker with an “alarming cache of illegal firearms and ammunition” inside.

Michael Kamfolt, 40, of Anderson, is now facing nearly a dozen weapons-related charges, including possession of an assault rifle and manufacturing of a ghost gun, after his arrest by the California Highway Patrol. He was taken into custody as part of an investigation into a suspected illegal marijuana cultivation operation on a property in Anderson, authorities said.

“This operation went far beyond an illegal grow. The combination of a hidden bunker and an alarming cache of illegal firearms and ammunition highlights the threat posed to public safety,” CHP Northern Division Chief John Pinoli said in a statement.

In a search of the property Jan. 20, “officers discovered an underground bunker accessible through a 100-foot-long culvert,” according to CHP.

The California Highway Patrol announced in a press release:

During the search, officers discovered an underground bunker accessible through a 100-foot-long culvert. The bunker was equipped with power, ventilation, a concrete floor with built-in drainage and the necessary supplies to cultivate marijuana.

In addition to the bunker, officers seized 13 firearms, four soft body armor vests, 30 high-capacity magazines, and approximately 10,000 rounds of ammunition, including armor-piercing rounds. Among the seized firearms were a sawed-off shotgun, three AR-15 style assault rifles, one with an obliterated serial number, and two firearms reported stolen in 2016 and 1978 respectively.

Based on the information provided, it does not appear that Kamfolt had actually threatened anyone.

CHP also shared multiple photos in a Facebook post:

WATCH the news report below for more details.