Where to begin?

Two teenage girls were killed early Tuesday when a train derailed on the bridge they were sitting on, spilling coal and burying the young women, police in Maryland said.

Rose Mayr and Elizabeth Nass, both 19, were apparently sitting on a bridge ledge in Ellicott City, Maryland, just after midnight with their backs to the train when it derailed, according to a written statement from Howard County police.

The two girls posted photos to Twitter shortly before the crash. One showed feet dangling over a road, with the caption "Levitating." Another appeared to look down Main Street.

Nass tweeted, "Drinking on top of the Ellicott City sign with @r0se_petals." The name Ellicott City is painted on the railroad bridge.