If it is Buckshaft (Buckshraft) then it is an SSSI site.
The mine is a very important hibernation location for greater horseshoe bats within the Forest of Dean and supports up to two thirds of the juvenile population from the Dean Hall SSSI in winter. Research has also demonstrated that greater horseshoe bats from the other Gloucestershire breeding roost at Woodchester Park SSSI which is at least 15 kilometres away come to the mine to hibernate.
The wide range of underground micro-climates sought by the bats are dependent on the ventilation, humidity and temperature of the mine system. This is, in part, influenced by the surface woodlands which act as wind breaks. The woodlands also provide feeding habitats for the bats and are important in ensuring a readily available food source of insects. This feature is particularly important in spring when the bats need to build fat reserves quickly to ensure a successful breeding season.
No doodling in the mine. I would concentrate on the house.:)
The past is a foreign country: they do things differently there.