This scenery in heroic 28mm scale, have been designed by Vae Victis Miniatures and are compaitble with Frostgrave, Dungeon saga, pathfinder,  and DND, Last war. Turnip28, Forbidden Psalm and other Old hammer games.
 
This set contains 8 pieces 
5x Tree stumps ( measure between 18 and 60mm tall)
3x felled logs (measure between 82 and 103mm long)
 
They come in ABS like resin.
 
Please note 3D printer resin is not like the Resin used to make injection moulded miniatures it can be a little more brittle.