Did you stack them too? lol I love your Thailand shots, as you already know and these stones are very interesting with their many colors and sizes. They certainly must serve some purpose, but I'm not familiar with Buddhism all that much.
You will be led to the knowledge of the internal things which are invisible to you, by the external things which you see before you. . . . Even so then, we can represent to ourselves in thought the Author of all that is, by contemplating and admiring the (visible) things which He has made, and ever brings into being.
- Hermes
Very good presentation of these well balanced rocks - a nice variety of sizes and colours are shown. Most likely they have some religious significance. Thanks for sharing your find Jeremy :*))