To drive to the parking area take Station Road beside the Memorial Hall in Lennoxtown, follow this road to the given coords.
From here walk West along the forestry road and the still West on to a smaller track, at the given Avenue waypoint turn South down the Avenue, you may expect there to be a crumbling mansion at the end of this deciduous tree lined avenue but no, nothing, just open moorland and extemely boggy, no need to go near the bogs to get the cache though.
Old maps from the turn of the century show a road running from the South which meets the end of where the avenue would be but this was to accesss the mining and limekilns, this road is long gone, at the Northern end of the avenue is a very large hole, does sort of look man made, a bit of a mystery.