Video: Mysterious crop circle appears in California

A farmer in the Salinas Valley in California woke up on Sunday morning to find a giant crop circle in his field.

The huge pattern was created by flattening some of crops in the field over the weekend. The circle was reported by two friends, who reportedly saw a couple of flashes of light before dawn on Sunday morning.

Security guards are keeping a close watch on the field and people are not allowed to enter to take a closer look.

No one has yet claimed responsibility for creating the crop circles near Monterey but they are attracting a lot of attention.

The intricate and digital-looking pattern covers about an acre of the field.