LAS VEGAS (TheBlaze/AP) — A 310-foot “crop circle” in a California barley field mystified locals that last week was explained Sunday — and it’s likely to disappoint extraterrestrial enthusiasts.

Gadget Show Nvidia Crop Circle

This photo provided by NVIDIA shows a 310-foot “crop circle” in a California barley field that mystified locals this week was explained Sunday Jan. 6, 2014: it was a publicity stunt by Nvidia Corp., a maker of chips for PCs and smartphones. The crop circle near Chualar, Calif., contained a stylized image of a computer chip and the number “192” in Braille. On Sunday, the company announced the Tegra K1, a new chip for tablets and smartphones that contains 192 computing “cores,” or mini-computers, for graphics applications. (AP/NVIDIA)

It was a publicity stunt by Nvidia Corp., a maker of chips for PCs and smartphones.

“This is a confession,” Nvidia CEO Jen-Hsun Huang said at a press conference in Las Vegas, ahead of the International Consumer Electronics Show, PC World reported.

The crop circle near Chualar, Calif., contained a stylized image of a computer chip and the number “192″ in Braille. The company announced the Tegra K1, a new chip for tablets and smartphones that contains 192 computing “cores,” or mini-computers, for graphics applications.

The mystery of the crop circle was heightened when it was plowed over without explanation last week:

Huang said at the press conference that he had given his marketing department the mission to promote the chip on a shoe-string budget. Rumors of Santa Clara, Calif.-based Nvidia’s involvement appeared Sunday before the press conference.

Watch Huang’s announcement:

In case you’re wondering, “no food was harmed,” in this stunt, Huang said.