Hi All, My block association wants to transform a vacant lot into a garden. The lot is completing overgrown, has tons of debris, trees and garbage. Our biggest challenge is that there is a 20ft drop or sinkhole in the lot that we need backfilled. Does anyone have any expereince with combating this situation. It seems like we would need to backfill the lot first, in order to get in there and clean out because of the danger. I am trying to get the NY Restoration Project to give suggestions on how to begin, parks department too.Any suggestions?