Have you tried seedballs thrown into the woodpiles? Try a mix of locally successful wild herbs/grasses/legumes. Anything that can get a foothold on the pile (in order to cover it, as per previous suggestions) and will attract birds, lizards and other far-ranging manure/seed importers. Any manure you can get in there will assist water retention and microbial activity. Spraying on milk waste, molasses dilutions, or dusting on powdered milk, or anything else containing complex-sugars will also assist in building microecologies that can break down the cellulose and lignin in the wood.
Keep at it! =)
