Nature’s beauty will be on full display at Lake Marvin Leaves are already turning on the GMA’s cottonwoods, chinaberry, hackberry, and persimmon trees. Adding color to the fall landscape will be wild plum bushes, sumac, and wild grapevines. The colorful pallet will add to the nature-oriented activities offered to guests of all ages. Hayrides, a s’mores station, a nature scavenger hunt, and…