Amateur Photographer
The St Bathans Blue Lake is an old mining pit. By the 1930s, miners had created the deepest mining pit in the southern hemisphere – but it had started to encroach on the town. So, it was abandoned and allowed to slowly fill with water, where the remaining minerals in the soil gave the lake a distinctive emerald colour.
800 metres long and 50 metres deep, the Blue Lake is the result of water filling the excavations carried out by the Kildare mine over 70 years. A 120-metre hill became a 58-metre deep pit, where a massive 68.8-metre hydraulic mining lift operated until the mine was abandoned in 1934.