Seahorse haven is in the Sam Houston National Forest. There are umpteen miles of woods to ride in - some are multi-use trails, and others are trails we use for endurance riding - all in all, miles and miles....
We are thinking about going in November sometime...don't know when exactly, we just decided to try to do it and haven't set a date.
I do know that you DON'T have to have shoes on your horse (if that helps anyone) the forest floor is dirt and there are a few forest roads to cross, but we can pick our way across those. You must bring a current coggins.
There are ravines and slopes and fallen trees here and there, so the trails can be technical and GREAT for training greenies. Might have to watch out for pigs, tho - they were squealing in my woods last night and tore up the neighbors front yard the night before - guess it is hog season again!