WGAL-TV reported that the hole swallowed the vehicles at about 4:30 p.m. Friday at Tanger Outlets just east of Lancaster City.
A woman tells the station she was inside one of the vehicles during the collapse, and described it like an earthquake. Bystanders helped her get out safely.
WGAL says no one is hurt, but the vehicles can't be removed until the area is stable.
A woman who answered the phone at the mall office said "the photos don't lie" about the incident, then hung up.
Lancaster is about 70 miles (113 kilometers) west of Philadelphia.
Information from: WGAL-TV, http://www.wgal.com
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