Off Yer Trolley - Larking About Traditional Cache

Off Your Trolley! caches are intended to provide fairly easy drive-by caches together with the opportunity to CITO in their recycling area and nip in to do the shopping at the same time or even escape the shopping for "The need to cache".

The River Lark runs through the middle of the car park here but has none of the picturesque qualities of other viewing points within the town!

It is, however, the only remaining large supermarket in the town without a cache so I decided it was about time that was changed!

Hint is very specific to enable a quick find.