The Eaton Fire burning through the hillsides and mountains above Pasadena is now approaching the Mount Wilson Observatory, with potential implications for both the historic structures and emergency communications during the ongoing wildfire siege devastating Los Angeles.

A wildfire burning in the greater Los Angeles area has reached Mount Wilson, the location of dozens of transmission towers that blanket the region with radio and television signals. Flames from the Eaton Fire reached the top of Mount Wilson around 11 a.

Authorities could not say what or how many structures are threatened by the spread, such as communication towers and the Mount Wilson observatory.