Walking word flow meditation?

The words just keep coming. And I keep walking. 30 minutes of walking word flow meditation. Never heard of it? Neither have I. But it is what best describes what I do every day when grandma wants to take rest. For about half an hour I walk around in the forest and just let my thoughts flow as they wish. I look at them, the same way as when I lay down on the grass looking at the clouds as a young girl. I see them passing by, some of them I notice more than others, some are really beautiful and makes me smile, some are just lose fragments and don't make any sense. Some of them leads to new thoughts, some of them maybe you will read here someday and some of them continues their journey out in the universe, maybe hoping that someone else will notice them.
It´s like watching a river that flows. It makes me calm. It makes my heart expand. And for me, that is what meditation is all about.