In December 2022 a group of 12 Finnish cavers from the Finnish Caving Society embarked on a journey to visit some caves in the UK.
Ogof Ffynnon Ddu (Cave of the Black Spring) is located in the Upper Swansea Valley in South Wales.
This is a documentary of the three day long trip. Footage is mostly filmed with GoPro Hero 9.
Creator: Tuomas Ilomäki, Finnish Caving Society