UBC Botany professor Carl Douglas, 61, has passed away after a climbing accident in the Glacier National Park on Monday morning.

Douglas was climbing the west ridge of Mount Tupper, when a rock he was holding broke away and he fell down 300 meters. The RCMP has said that he and his two climbing companions were doing everything right.

The UBC community has been speaking out, mourning Douglas's loss.

Carl Douglas, an examiner on my PhD thesis, was a keen collaborator and a respected friend and colleague. He will be sorely missed @FMG_UP — Steven Hussey (@HusseySG) July 27, 2016

My thoughts go out to the friends and family of Professor Carl Douglas, former Head of Botany at UBC. #Condolences — Santa J. Ono (@ubcprez) July 27, 2016

Carl Douglas was a wonderful mentor, collaborator, & friend.

He will be missed immensely. Thanks for so much, Carl.https://t.co/68TMOzbgIa — Malcolm M. Campbell (@m_m_campbell) July 27, 2016