Ping!
Volcanic ash is not the same a lava. Molten lava will burn just about anything organic. You do not find large, standing sections of tree trunks in lava deposits.
Volcanic ash, on the other hand, can be either hot or cooled. If the latter, it can bury anything. There are numerous repeated deposits of ash preserving covered forest in Yellowstone Park.
I would like to know who identified the wood as “hickory.” Was this an expert’s opinion, or the word of some guy who accidentally ran into the fossils with a bull-dozer? Identifying fossil wood is not a simple matter, and there are few good books on the subject — and there is much folklore.
As for people who believe that the Earth is but a few thousand years old, your scientific knowledge is really pitiful. Not only that, but your understanding of the Bible is less than one would expect from an adult, Sorry about that.