I like the idea of sort of (but not really) making coal again in a fight against climate change. In WV we have tons of old strip mine - we should fill them up

I like the idea of sort of (but not really) making coal again in a fight against climate change. In WV we have tons of old strip mine - we should fill them up with plants and bury it. If we did something like that I imagine the biomass under the earth would compress over time and the land above would end up shifting and causing issues for anyone that wants to use it. Edit - Daydreaming about this scenario and I am imagining trying to sell the idea of refilling the old coal mines with biomass to folks living in coal country. An interesting and funny situation.