VIDEO: Large tree falls on kids playing at Massachusetts park

CHELSEA, Mass. (KFSN) -- Disturbing video shows a large tree falling on children playing at a park in Chelsea, Mass.

Witnesses said they heard cracking noises right before the large tree fell right on top of two little boys on Monday. The kids -- ages 2 and 8 -- are recovering at a Boston hospital. One of them is being treated for a possible fractured skull.

There is no word on what may have caused the tree to go down. The park has been closed until the other trees can be inspected.