A chilling glimpse into an all-too-plausible future of advertising opportunities, 'Pay and Display' can be found on a portion of dry stone wall towards the end of the Millwood Trail. On it, Calum Stirling has painted several of the individual stones with the logos of various outdoor leisure companies, such as tent manufacturers Vango and mapmakers Ordnance Survey. The artist has also cannily included on one of the bricks an advert for his own website, where the sculpture is referred to as 'Logo Wall'.

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Stirling was born in Edinburgh in 1965 and 'Pay and Display' is his only sculpture in Grizedale. However, during his residency he also undertook a project called 'Silver Spruce v Larch Pole Pine', a performance piece in which he translated the process of photosynthesis into noise by hooking two trees up to a mixing desk. The resulting sounds were performed live in the forest.