It's a night cache! And a winter's night at that; in the summer the foliage will hide the markers, and you'll get impatient waiting for the sun to set. At the start location use an ultra violet light to find your first instructions. Then follow the shiny markers using a torch, ideally a head one. Some are at child height, and some adult. A few are the right height for a tall adult - this will need team work! Double markers mean look around, the direction is altered. And at the final location, well, you are cachers, you will know when you are at the final location! Enjoy! Oh, and don't forget your wellies!