The dense timberlands in a small town near West Yellowstone, Montana, concealed the wreckage of a small plane until an unlikely beacon — a victim’s smartwatch — helped search-and-rescue crews locate the crash site,

Authorities used the smartwatch’s last location to search for the small plane, which had three on board when it crashed “in dense timber” near West Yellowstone.

All three on board were found dead after the plane went down Friday after taking off from West Yellowstone Airport, authorities said.