DUNSEITH (AP) - Heavy rain and hail struck the International Peace Garden, shredding its plants, flooding campgrounds and causing a wall to collapse in one building, the chief executive officer of the Canadian border park says.

No one was hurt, but some campers had to be evacuated after the downpour Sunday night, Chief Executive Officer Doug Hevenor said.

"We got pummeled," Hevenor said Monday. "We had a major wall collapse in the administration building, about 18 inches of standing water in the basement.

"Our sunken garden is sunken; it's completely under water," he said. The park's gift shop also was waterlogged.

More than 3 inches of rain came down in about 45 minutes, Hevenor said. It was followed by hail.

"Our canna lilies are just shredded," Hevenor said.

Hevenor was still tallying up the damage Monday, after being on the grounds all night.

The International Music Camp, involving more than 200 students, is continuing at the Peace Garden, though some of the students had to hustle into a tornado shelter on Friday night, Hevenor said.

The storm damage may help to speed up repairs that were already planned for the 2,300-acre International Peace Garden after years of neglect. Its problems include rotting buildings, sinking foundations, overgrown trees and dandelions.

The Peace Garden expects to get $5 million over the next two years from government and private sources, and plans a $32 million expansion.