Location Reports Search for a location No results found Underground, England 🏴 GRONK 27/07/2026 Underground, England 🏴 GRONK 27/07/2026 Sallet Hole, Stoney Middleton Read More Underground, Wales 🏴 GRONK 26/06/2026 Underground, Wales 🏴 GRONK 26/06/2026 Henddol Slate Mine, Fairbourne Read More Underground, England 🏴 GRONK 17/06/2026 Underground, England 🏴 GRONK 17/06/2026 West Precinct Goods Yard, Stoke on Trent Read More Underground, England 🏴 GRONK 19/01/2026 Underground, England 🏴 GRONK 19/01/2026 Stockton Brook Tunnel, Stoke-on-Trent Read More Underground, England 🏴 GRONK 19/01/2026 Underground, England 🏴 GRONK 19/01/2026 Fenton Manor Tunnel, Stoke-on-Trent Read More Underground, England 🏴 GRONK 19/01/2026 Underground, England 🏴 GRONK 19/01/2026 Sherwood Rise Tunnel, Nottingham Read More Underground, England 🏴 GRONK 28/12/2025 Underground, England 🏴 GRONK 28/12/2025 Redmires Reservoir Plug Hole, Sheffield Read More Underground, England 🏴 GRONK 22/12/2025 Underground, England 🏴 GRONK 22/12/2025 Lydgate Tunnel, Saddleworth Read More Underground, Wales 🏴 GRONK 19/10/2025 Underground, Wales 🏴 GRONK 19/10/2025 Aberllefenni Slate Quarry, Machynlleth Read More Underground, England 🏴 GRONK 07/10/2025 Underground, England 🏴 GRONK 07/10/2025 Trubshaw’s Tunnel, Cotton Read More Drains and Culverts, England 🏴 GRONK 15/09/2025 Drains and Culverts, England 🏴 GRONK 15/09/2025 Pitchford Hall Culvert, Shrewsbury Read More Underground, England 🏴 GRONK 13/08/2025 Underground, England 🏴 GRONK 13/08/2025 Woodside Tunnel, Birkenhead Read More Underground, England 🏴 GRONK 13/08/2025 Underground, England 🏴 GRONK 13/08/2025 Monks Ferry Tunnel, Birkenhead Read More Drains and Culverts, England 🏴 GRONK 07/08/2025 Drains and Culverts, England 🏴 GRONK 07/08/2025 Markeaton Interceptor (Flo Selecta), Derby Read More Underground, England 🏴 GRONK 14/07/2025 Underground, England 🏴 GRONK 14/07/2025 Worsley AAOR, Salford 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 Underground, England 🏴 GRONK 11/06/2025 Underground, England 🏴 GRONK 11/06/2025 Keele Railway Tunnel Read More Underground, England 🏴 GRONK 11/06/2025 Underground, England 🏴 GRONK 11/06/2025 Silverdale Railway Tunnel Read More Underground, England 🏴 GRONK 02/06/2025 Underground, England 🏴 GRONK 02/06/2025 Walton Tunnel, Liverpool Read More Older Posts
Underground, England 🏴 GRONK 27/07/2026 Underground, England 🏴 GRONK 27/07/2026 Sallet Hole, Stoney Middleton Read More
Underground, Wales 🏴 GRONK 26/06/2026 Underground, Wales 🏴 GRONK 26/06/2026 Henddol Slate Mine, Fairbourne Read More
Underground, England 🏴 GRONK 17/06/2026 Underground, England 🏴 GRONK 17/06/2026 West Precinct Goods Yard, Stoke on Trent Read More
Underground, England 🏴 GRONK 19/01/2026 Underground, England 🏴 GRONK 19/01/2026 Stockton Brook Tunnel, Stoke-on-Trent Read More
Underground, England 🏴 GRONK 19/01/2026 Underground, England 🏴 GRONK 19/01/2026 Fenton Manor Tunnel, Stoke-on-Trent Read More
Underground, England 🏴 GRONK 19/01/2026 Underground, England 🏴 GRONK 19/01/2026 Sherwood Rise Tunnel, Nottingham Read More
Underground, England 🏴 GRONK 28/12/2025 Underground, England 🏴 GRONK 28/12/2025 Redmires Reservoir Plug Hole, Sheffield Read More
Underground, England 🏴 GRONK 22/12/2025 Underground, England 🏴 GRONK 22/12/2025 Lydgate Tunnel, Saddleworth Read More
Underground, Wales 🏴 GRONK 19/10/2025 Underground, Wales 🏴 GRONK 19/10/2025 Aberllefenni Slate Quarry, Machynlleth Read More
Underground, England 🏴 GRONK 07/10/2025 Underground, England 🏴 GRONK 07/10/2025 Trubshaw’s Tunnel, Cotton Read More
Drains and Culverts, England 🏴 GRONK 15/09/2025 Drains and Culverts, England 🏴 GRONK 15/09/2025 Pitchford Hall Culvert, Shrewsbury Read More
Underground, England 🏴 GRONK 13/08/2025 Underground, England 🏴 GRONK 13/08/2025 Woodside Tunnel, Birkenhead Read More
Underground, England 🏴 GRONK 13/08/2025 Underground, England 🏴 GRONK 13/08/2025 Monks Ferry Tunnel, Birkenhead Read More
Drains and Culverts, England 🏴 GRONK 07/08/2025 Drains and Culverts, England 🏴 GRONK 07/08/2025 Markeaton Interceptor (Flo Selecta), Derby Read More
Underground, England 🏴 GRONK 14/07/2025 Underground, England 🏴 GRONK 14/07/2025 Worsley AAOR, Salford 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
Underground, England 🏴 GRONK 11/06/2025 Underground, England 🏴 GRONK 11/06/2025 Keele Railway Tunnel Read More
Underground, England 🏴 GRONK 11/06/2025 Underground, England 🏴 GRONK 11/06/2025 Silverdale Railway Tunnel Read More
Underground, England 🏴 GRONK 02/06/2025 Underground, England 🏴 GRONK 02/06/2025 Walton Tunnel, Liverpool Read More
