Hi Sleepysod the bases are are just made out of blue foam they use in insulation it was some scraps from a diorama i made ,sliced a few thin slices glued to a normal square base add some sand .cork and a little skull ,spray painted black,couple of grey drybrush's add some washes ,little bit of static grass and leave some room for tufts.
I just need to find out how i post photos properly ,i tried from my one drive but the file was too big so i then saved it again to my pc then uploaded again to here it worked but with a mad scrolling feature,if anyone knows the best way to upload please let me know thanks