Eerie photos have shown a ring scorched into the ground where a family claimed to have watched a UFO land and knock down a tree.

On an episode of the History Channel's series, The Proof Is Out There, witnesses and experts examined a possible UFO incident in Kansas in 1971.

On November 2, 1971, in Delphos, Kansas, Ron Johnson was working on his family farm when he saw a mushroom-shaped spacecraft.

Johnson, who was 16 at the time, ran to tell his parents and they returned to see the craft floating away.

But when they took a closer look at the ground near where the craft was, they noticed an eight-foot-wide ring.

The ring had a white crust around the edge and appeared to be glowing.

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