The location is Berridge Park in Denmark. If you are coming from
Albany along the South Coast Highway, cross the Denmark River
Bridge and take the first left. There is street parking if you're
lucky. Or the car park further down the road.
With picnic tables, playgrounds, boating on the river and a pub
opposite, it is not surprising that this place is knee deep in
Muggles during the tourist season, so some stealth will be
required. (There are also great coffee shops around the corner, and
a bakery that habitually scoops the prizes for pies and pastries at
the Royal Show!)
And if you are wondering who Mr Clark was, look for the bronze
plaque nearby.
Good hunting and good luck!
cheers, roymerc
BTW, when you've done this cache you will
be about 450 metres away from a very different geocaching
experience. Take a look at "Bring Your Own Battery #4"
(GC319M4). Don't be put of by the 'Mystery or Unknown' listing,
this will be the easiest find you will ever make. It is in clear
view and even has a Geo-Logo on it! Just one catch: you will need a
9 volt battery...