Part of northbound I-97 closed for emergency repair of sinkhole - CBS Baltimore
Homes demolished after sinkhole on North Avenue grows larger
Massive sinkhole continues to cause issues for drivers in Frederick
25-foot sinkhole closes lanes on I-270 in Gaithersburg
Geologic map depicts sinkhole susceptibility in Maryland | American Geosciences Institute
Sinkholes & Subsidences in Maryland
Sinkhole still gaping in Frederick, Maryland - YouTube
Sinkholes: common, costly and sometimes deadly | CNN
No timetable yet on patching large Md. sinkhole - WTOP News
Cadillac driver ignores signs, plunges car into Prince George's Co. sinkhole: Officials | KRCR
Massive sinkhole continues to cause issues for drivers in Frederick
Owings Mils, Md: 2004 sinkhole
Massive sinkhole continues to cause issues for drivers in Frederick
Crews to monitor massive Frederick, Md. sinkhole with rain in forecast | WJLA
Massive Sinkhole Shuts Lanes Of I-270 For Days | Montgomery Daily Voice | Your Local News for Montgomery County, Maryland
Driver Plunges Cadillac Into Sinkhole After Ignoring Cones and Barriers
Traffic On I-270 South Backed-Up By Sinkhole Repairs: AM Traffic | Rockville, MD Patch
Sinkhole in Frederick, Maryland | U.S. Geological Survey
Lochearn, Md.: 2003 sinkhole
Sinkhole in Frederick, Maryland impacts roads and water services - YouTube
Large sinkhole in Maryland, heavy rains and downed trees create traffic troubles in D.C. - The Washington Post
Leave a lot of extra time': Crews assess, repair sinkhole on I-270 in Montgomery Co. - WTOP News
Massive sinkhole continues to cause issues for drivers in Frederick
Water restored for areas impacted by massive sinkhole in Frederick, Md. | WBFF
Sinkhole Closes Part Of 270 In Montgomery County
Clinton, Maryland sinkhole closes roads, swallows car | wusa9.com
