Corfe Castle was built on a steep hill in a gap in a long line of chalk hills, created by two streams eroding the rock on either side. The name Corfe derives from the Old English ceorfan, meaning 'a cutting', referring to the gap. The construction of the medieval castle means that little is known about previous activity on the hill. However, there are postholes belonging to a Saxon hall on the site. The hall may be where Edward the Martyr was assassinated in 978. see en.wikipedia.org/wiki/Corfe.... for more information
standing at the bottom of the outer bailey, you're looking up at the motte and the keep atop it. On the left edge is the only way in.. through another set of gates across another inner ditch.