The cache is a small plastic clip-lock container perched
precariously.
Parking options are not great: you may as well use parking as
per the previous (Cowley Village) or next (Florrie's Florin) caches
in the series.
Note regarding the route to Florrie's
Florin (it's somewhat non-obvious). Cross the bridge and climb the
steps. Turn right immediately to follow the stream, crossing
another little bridge, until you reach a tarmac'd lane. Go up
(right) the lane until the footpath leaves to the left and takes
you to the cache. These directions are correct at the time of
writing, but may change as renovation work on Coberley Mill
progresses.
Coberley Mill is one of eight caches around
Cowley County Parish ... why not get out there and see them
all! I recommend tackling the circuit anticlockwise,
starting/finishing at Cowley Village.