Of particular interest here are accounts that the cave contained a sheathable and unsheathable Sword of Laban, which seems to contradict reports that the Sword of Laban had rusted out. (Or it implies that the blade had been reforged.)
It is noteworthy that none of the recorded sources are primary. (Many of the sources are clearly tertiary or worse.) The original source would appear to be Oliver Cowdery, but it's not clear under what condition anybody who claims to have heard it from him, received the story. Typically, the cave is portrayed as being in the Hill Cumorah, but David Whitmer denies that and says that it is only near the Hill Cumorah.