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Descent 305 - Pre-order is open!!
Our August/September issue has a publication date of 2 August, and it is a special summer bumper issue full of stories of exploration and wonder from the underground world.
Man hole near the adit portal used originally for water extraction then to a covered reservoir. Now disused. My entry point to the blocked cut and cover part back in the 1970's.
Our repair work to collapsed ginging in the adit ventilation shaft caused by seepage from water high above the adit base. At topmost level the shaft water is fractionally higher than the ventilaton shaft entrance.