Norwegian cave diver Ina Trælnes and her Finnish fiancé, Jani Santala, aim to set a Guinness World Record for the largest wedding ceremony in a flooded dive-access-only cave 35 km away from Mo i Rana in Norway on Saturday, August 10.Seventy guests have been invited to the ceremony which will take place deep inside the largest water-filled cave in northern Europe, in the Plura cave system. Reaching the spot will involve a 450-metre (1,476 feet) dive into the cave.

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