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Explore the history behind the castle’s building materials with a guided walk by Dr Peter Oliver.

Taking a look at the predominant building stone of the Castle – Triassic red sandstone some 230 million years old – visitors will get to learn all about how it was formed and where it comes from. You will also learn about the floor in the Great Hall which is a Jurassic limestone with plenty of fossil fragments, and in the Chapel, floor ’tiles’ made from Carboniferous limestones full of coral fossils. Also on offer are the Castle’s marble fireplaces, Dr Oliver explaining how marble is formed, and rocks used as exhibits in the museum.

Costs and Booking

Normal admission prices apply, donations welcome.