red earthworm in a hole in the ground under the stump of an old tree

burrow burrower crawl damp dark decay decomposer detritus earthworm ecosystem forest fungus ground habitat hidden hiddenlife hole humus invertebrate moist moisture mulch nature nutrients organic organicmatter recycle red roots shelter soil soilaerator soildweller soilhealth stump subterranean tree tunnel tunneldweller underground worm wriggle wriggler