Open sinkhole about 200+ feet in diameter. Water in southwest corner only. Eupatorium capillifolium (6-8 feet) covers the bottom of the slope, now emergent from water in deepest part of hole. Rhexia virginica at edge of water. White sand is exposed uphill from water, with herbaceous cover of Hypericum gentianoides, Diodia teres, Helianthemum arenicola below the ubiquitous Eupatorium. Helianthemum abundant around top of sinkhole, along with occasional Eupatorium compositifolium.