Comment by jagger27

Kiln drying is an interesting idea to speed it up and prevent premature rot, but might offset some of the carbon impact since most industrial kilns use fossil fuels directly or upstream if electric.

Maybe it would be more effective to drop wet lumber off in the desert for a few years by rail before moving the dry lumber to permanent underground storage. This assumes two stages of transport to and from the desert would cost less carbon than transport to a kiln and then to storage.

I’m not convinced that the wood even needs to be dried before burying, though.