Today I visited the Land's End Trail in San Francisco. There are some great views of the Golden Gate bridge and the Marin Headlands up there.

The trail winds around the edge of the cliffs. At their feet are rocky beaches.

At the beach, I noticed this gentleman carefully gathering rocks and stacking them into piles. He told me that he likes to visualize them as antennae into space while meditating there.

Further along the beach, more people were stacking rocks. I particularly liked this one.

I decided to have a go myself. Here are the stacks that I built.

Collecting rocks and stacking them is fun in a childish way, but I also benefited from the exercise and excellent sea air, and overall found it a surprisingly good way to relax.