The first all-Ireland meeting of anti-fracking campaigners takes place in Enniskillen at 1pm this afternoon.
Activists will demonstrate against plans by Australian firm Tamboran Resources to start drilling for gas in the north-west by the year 2014.
The company has claimed that with an investment of €6bn, it could harvest 40 years' worth of gas in Leitrim and Fermanagh.
John Cronogue, who is helping to organise today's protest, warns that fracking would pollute the River Shannon, the most important water river basin on this island.