I am trying to find the title of a science fiction book/story that I read many years ago (about 40!).
All that I can remember is that it involved explorers (I think they may have been archaeologists) on a dead planet that at one time had a civilisation. They find various artifacts including symbols that could be a written language. The event that sticks in my mind is the discovery of a room that has a fire in it that has been used by the last remaining members of the civilization to commit suicide by asphyxiation. I can't remember why! Thanks for your help!