I know Paul Morrison likes to stack up rocks. He uses the term cairns to describe the stacked up balanced rocks.
The pictures here are from halibut2 and were taken on May Day at Halibut Point. The video is from pro rocker-stacker Bill Dan.
From the wikipedia page for cairns-
A cairn (carn in Irish, carnedd in Welsh, càrn in Scots Gaelic) is a human-made pile of stones, often in conical form. They are usually found in uplands, on moorland, on mountaintops, or near waterways.
If you’re looking for something to do why not head out to Halibut Point, make some cairns, take some pics and submit them here to GMG