StoneRoad2013's photos with the keyword: coal dust

shs - ripples

shs - ripples

StoneRoad2013
21 Jun 2021 104
Ripples in the sand, helpfully outlined by tiny fragments of coal.
gbw - sand patterns

gbw - sand patterns

StoneRoad2013
14 Nov 2012 2 370
small scale dendritic drainage patterns - erosion and deposition processes in miniature.
gbw - picture in the sand

gbw - picture in the sand

StoneRoad2013
14 Nov 2012 341
the runoff had disturbed the coal dust to expose the sand underneath.