GRONK URBAN EXPLORATION Location Reports Leisure, Underground, Wales 🏴 GRONK 30/11/2025 Leisure, Underground, Wales 🏴 GRONK 30/11/2025 Grange Cavern Military Museum, Holywell Read More Underground, Wales 🏴 GRONK 19/10/2025 Underground, Wales 🏴 GRONK 19/10/2025 Aberllefenni Slate Quarry, Machynlleth Read More Underground, Wales 🏴 GRONK 11/07/2025 Underground, Wales 🏴 GRONK 11/07/2025 Cambrian Slate Mine, Llangollen Read More Underground, Wales 🏴 GRONK 23/06/2025 Underground, Wales 🏴 GRONK 23/06/2025 Penarth Slate Mine, Corwen Read More Industrial, Wales 🏴 GRONK 10/03/2025 Industrial, Wales 🏴 GRONK 10/03/2025 Maenofferen Slate Cutting Mill Read More Underground, Wales 🏴 GRONK 03/03/2025 Underground, Wales 🏴 GRONK 03/03/2025 Maenofferen Slate Mine Read More Underground, England 🏴 GRONK 31/12/2024 Underground, England 🏴 GRONK 31/12/2024 Middleton Mine Read More Industrial, England 🏴 GRONK 04/11/2024 Industrial, England 🏴 GRONK 04/11/2024 Fluorsid Cavendish Mill Read More
Leisure, Underground, Wales 🏴 GRONK 30/11/2025 Leisure, Underground, Wales 🏴 GRONK 30/11/2025 Grange Cavern Military Museum, Holywell Read More
Underground, Wales 🏴 GRONK 19/10/2025 Underground, Wales 🏴 GRONK 19/10/2025 Aberllefenni Slate Quarry, Machynlleth Read More
Underground, Wales 🏴 GRONK 11/07/2025 Underground, Wales 🏴 GRONK 11/07/2025 Cambrian Slate Mine, Llangollen Read More
Underground, Wales 🏴 GRONK 23/06/2025 Underground, Wales 🏴 GRONK 23/06/2025 Penarth Slate Mine, Corwen Read More
Industrial, Wales 🏴 GRONK 10/03/2025 Industrial, Wales 🏴 GRONK 10/03/2025 Maenofferen Slate Cutting Mill Read More
Underground, Wales 🏴 GRONK 03/03/2025 Underground, Wales 🏴 GRONK 03/03/2025 Maenofferen Slate Mine Read More
Underground, England 🏴 GRONK 31/12/2024 Underground, England 🏴 GRONK 31/12/2024 Middleton Mine Read More
Industrial, England 🏴 GRONK 04/11/2024 Industrial, England 🏴 GRONK 04/11/2024 Fluorsid Cavendish Mill Read More
