National Cathedral Head Mason Joe Alonso estimated a piece weighing about 3,000 pounds toppled from the central tower. He called the damage to that section of the Cathedral “mind boggling.”

A link to video of Alonso detailing the damage was tweeted by the National Cathedral on Wednesday morning.

“A lot of what fell, we’re fortunate that it fell in toward the roof and not out toward the streets,” Alonso said in the video.