It was established in 1931 on the western shore of Flathead Lake and, in addition to religious camps and retreats, offers wedding, event and meeting spaces.
More than 50 people were injured when the deck gave way following a memorial service for a firefighter who died in April.
Saturday's collapse at the Glacier Presbyterian Camp left two people critically injured as of Sunday, and left many more to wonder whether the 10-foot-high deck buckled from the weight of too many people or if there was another reason it failed.
Dozens of people were injured, some critically, after a second-story deck collapsed at a Montana lodge Saturday during a funeral, officials said.
Fourteen people were taken to local hospitals, Lake County Sheriff Don Bell told ABC affiliate KFBB-TV.
He added that he saw first responders from across the northwest Montana attending to the hurt - which ranged from children to elderly. "It'll be handled between the property owner and the people who got injured yesterday".
"Of the more than 50 people hurt, more than half of them were taken to Kalispell Regional Medical Center where doctors say many had bone and ankle fractures as well as neurological injuries that required immediate surgery".
Eyewitnesses said the deck felt "spongy" on one side and then collapsed. He would not speculate as to what caused the collapse. Others had serious injuries and had to be transported by helicopter.
First responders from at least 16 fire, EMS, police, and other departments rushed to the scene, according to a Somers/Lakeside Fire Department Facebook post.
On its website, Glacier Camp wrote, "This afternoon, we had a major accident at camp".