Knightstone Manor, which is 100m past this cache was built by Thomas de Bittlesgate in 1380, and today it is one of the best preserved medieval houses in Great Britain.
It is a typical medieval Hall House, with a central Great Hall and other living and serving areas surrounding it. Two wings together with the main house create a central courtyard. At one end is the former chapel, converted in the 16th century to more living areas. The chapel was consecrated by the bishop of Exeter in 1381.
A glimpse of the house can be seen through the front gates as you walk on towards the next cache.
You are looking for a Bison Tube.
Congratulations to Sixexers FTF