A landslide sent at least 10 parked cars tumbling over a 30-foot drop on Baltimore's E. 26th Street Wednesday, and residents of the neighborhood say they saw it coming.

"Several neighbors have called the city over the past year, they patched it with blacktop. But over the winter, because of the snow, it just kept cracking. I got home at 3:30 and there were already several cars, about eight of them, settling into the ground," one witness told CBS Baltimore.

A retaining wall collapsed after the area got more than 3 inches of rain over the past two days, causing the cars to drop onto railroad tracks used by Florida-based transportation company CSX. The tracks are closed for now, but passenger train service, including Amtrak, wasn't disrupted.

More pressingly, residents of the block have been forced to evacuate their homes while the city assesses the damage. Department of Public Works engineers were out today, making sure gas and electric lines weren't at risk. A nearby elementary school was also closed.

Baltimore Mayor Stephanie Rawlings-Blake said the cause of the collapse hasn't yet been determined.