The top of Round Top Mountain is covered in sandstone boulders up to 20 feet tall. See Pictures.
No known access issues at this time. I have been up there a couple of times and have had no problems. I have seen boy scouts hiking around the rocks before.
Take HWY 270 East out of McAlester, Ok.for about 12 miles. 270 will split from HWY 63/ 1 and go NE. Take HWY 270 North for about 2 miles. Round Top Mtn. will be on your left ( West side of the road ) There is a horrible dirt pull off there that swings back parallel to the hwy and goes up hill. This is where I drive as far as I can and then park.