Pack of 12 Tree Snags/Trunks
free sample: https://www.cgtrader.com/free-3d-models/plant/other/mossy-tree-trunk-snag
Low-poly and High-poly versions:
Formats:
free environment assets: https://www.cgtrader.com/free-3d-models?author=background-assets&free=1&per_page=120