The Marble Arch Caves provide a glimpse into a fascinating, natural underworld of rivers, winding passages and chambers sculpted by geomorphic processes over many thousands of years. 

Join the Geological Survey of Northern Ireland and our Caves Team to hear about the hydrology of the caves whilst watching the Shru Croppa River turn an astonishing luminous shade of green! Dye tracing is a method used by hydrogeologists to trace the flow of underground streams and rivers. Learn about the importance of dye tracing in the field of Geology and the various pieces of equipment used to carry out these exciting experiments. 

Find out more about the tracing experiments that have been carried out in the wonderfully wet County of Fermanagh. 

Covid-19 Guidance

As part of public health Covid-19 mitigation measures we have introduced a number of measures to make this event enjoyable. We have reduced event capacity with a cap of 12 participants on each session.  We do require for participants to drive to location a) Shru Croppa this is a 2 minutes drive from the Marble Arch Caves Visitor Centre and directions will be provided on the day.

Face coverings should be worn within the Marble Arch Caves Visitors Centre and Show Cave by participants 13years and over however those who have a reasonable excuse not to wear a face covering, as advised by Government guidelines, will be exempt. We do ask that participants follow social distancing guidelines for the duration of the event. 

Additional information on Marble Arch Caves Covid-19 Guidance can be found by following the link provided: Plan Your Visit To Marble Arch Caves, Co. Fermanagh Northern Ireland