Here is the ‘small print’:

The Plymouth Mineral and Mining Club is affiliated to the Geologists’ Association, through which it holds insurance in respect of third party claims whilst undertaking official excursions.

Official excursions are those where the leader or leaders have been appointed by the Committee prior to the event, and are the only excursions to which the name of the Club may be attached.

The Plymouth Mineral and Mining Club does not undertake underground exploration and any person who goes below ground for that purpose during an official excursion does so entirely at his or her own risk and is deemed to have left the excursion. However, guided visits to show mines or working premises with the owner’s permission are considered valid activities.

A Club event is any activity or meeting officially called by the Committee whether indoors or out.