Surrounded by PFOIA 1st terrace. Some of the large trees have blown down outside of the plot creating pits, mounds and dense growth in gaps.;Overflow/swale. Large (virgin?) Pin oaks in this area, subject to blowdown because of wet soil conditions. Very large diameter trees in canopy with variously open and dense herb and shrub layers with more open conditions in swales (including about 1/2 of this plot).