Patrick e-mailed that photo after his neighbors’ driveway along the east stretch of Harbor Avenue SW collapsed into a several-feet-deep sinkhole: “My neighbor’s driveway gave out beneath a truck, and what we found was that there is nothing …. NOTHING below the pavement. … I’m afraid the same thing is below my house/driveway.” We went by for a quick look. The residents are renters, so they were going to contact their management company to figure out what to do next – it’s on private property, not city right-of-way, unlike the 3-story-deep sinkhole (blamed on a pipe break) on not-too-far-away Fairmount a few months back.