June 7, 1971, marked the birth of an island icon. One rainy night after their graduation ceremony, two young people went out to fulfill their part in a local tradition known as “Paint Night.” A rock formation at the corner of Madison and Phelps Road had long been subjected to various graffiti, but Bob Green and Linda Barnes decided it looked like a frog and proceeded to paint it that way.

The rocks are technically a glacial erratic, a large boulder left behind by the movement of glaciers. The stones were once a single rock that was dynamited in the 1950s for road work. Instead of breaking into rubble, it only split it in half, so it stayed.

Since then, there have been additions, decorations, and the odd tag on the rock. In 1976, Bob and Ellen returned to create some company for Frog Rock in the form of the Lady Bug rock. A mustache has been painted once or twice, and in 2020 Frog wore a mask in solidarity for public health!