Show texas big thicket the big thicket in texas is located in the eastern part of polk county in southeastern texas there is a small town called thicket adjoining this area in the northwest of the neighboring oring county of hardin the area in question is densely wooded with pine oak ash elm and other hardwood species the added presence of vines makes it a jungle the area was originally set aside in 1800 by sam houston as a reservation for the Ali bamus and hattis two southeastern tribes which emigrated to texas after their forcible removal from A labama alabama and mississippi the big thicket is the only indian reservation in texas |