Grotto And Retaining Walls 60 Metres South Of Wallingwells Hall And East Of The Lake

The grotto and retaining walls, located 60 metres south of Wallingwells Hall and east of the lake, date from the mid-18th century. They are constructed from rough hewn rocks and some brick, featuring a circular plan. The central area has a blocked archway, flanked by single walls. On the lake side, there is an additional archway with a pendant keystone. The interior, which includes some red brick, is domed and contains three large arched niches and one small arched niche, all with rough hewn keystones and voussoirs. Originally, the domed roof was lined with mineral crystals and decorated with stalactites. The retaining walls on either side of the entrance extend 15 metres to the south and 31 metres to the north, running between the lake and a wooded bank.