Enjoy the unique experience of snorkelling in a freshwater limestone sinkhole. Due to the size of the pontoon, group size is limited to 8 participants. The experience includes a welcome briefing covering the history of the sinkhole and everything you need to know about snorkelling, fitting you with mask, fins, snorkel and wetsuit (or feel free to bring your own) and an accompanied snorkel tour with an experienced guide. In total, your snorkelling at Kilsby Sinkhole will take around two hours. No weights allowed or Free Diving Fins.