CLAREMORE, Okla. (AP) — Kimberly Politte cast the first stone and started a colorful rockslide.

Politte created the Facebook group 918 Rocks!

People in the group post photos of painted rocks they are hiding or have found in spots all over the 918 area code.

918 Rocks! once was an itty bitty group, but it has boomed in popularity. Barely half a year old, the group has almost 9,000 members.

The story behind the story — the person who inspired Politte to create 918 Rocks! — is her 8-year-old son, Hunter.

A cancer survivor, Hunter can't see all the colorful rocks.

"After we exhausted every option...