This is a camouflaged small clip lock box placed on the side of the Herefordshire Trail close to "The Wonder" and not too far from the GC3GA4E cache of the same name up on the ridge.
The OS map shows this as the site of the landslip of 17th February 1575 and while the landscape here is a little unusual we will leave it to you to decide if you are looking at the remains of a natural phenomena that took place over 430 years ago or the result of more recent human activity.
There is a good description of the landslip and what caused it on the GC3GA4E web page.
We would recommend that you park at either of the places suggested for the GC3GA4E cache and take a circular walk taking in both caches. Alternatively you may find it possible to park at N 52° 01.471 W 002° 31.989 for a shorter walk. Either way some of the route could be muddy after rain as it was when the cache was placed. If you take the shorter walk you will need to turn left off the road at the gate opposite the T junction. There are no signs indicating that this is part of the Herfordshire Trail or a footpath at all but it is marked as such on the map.