Please follow the link below to view a news report from the local NBC affiliate in Philadelphia regarding the dangers of swimming in quarries. Referenced in the video is the recent tragic drowning at Heritage Minerals in Manchester Township. Quarries, such as those at Heritage Minerals, present dangers such as deep, unexpected drop-offs, rapidly changing temperatures, and unsound ground that can crumble without notice.

Video: Dive Team Shows Unexpected Dangers of Quarry Swimming