McCloy, Andrew; Midgley, Andrew (2008). "Hardknott Fort". Discovering Roman Britain. New Holland Publishers. pp. 132–139. ISBN9781847731289. Archived from the original on 21 August 2016.
"Roads". Industrial History of Cumbria. Cumbria Industrial History Society. Archived from the original on 25 May 2016.
geohack.toolforge.org
The Wasdale to Langdale route reaches the Sty Head Pass but does not descend north to Borrowdale but rather continues southeast to a high point at a col often wrongly called "Esk Hause" at NY234083 with an elevation 722 metres (2,369 ft) (near a stone shelter). Rossett Pass is then crossed. The route was used for taking smuggled goods from Ravenglass.[46]
"1:50 000 Scale Gazetteer". www.ordnancesurvey.co.uk. Ordnance Survey. Archived from the original on 17 April 2016. Retrieved 11 May 2016. This product is still available to download although it has been officially "withdrawn".
rgs.org
"Lake District". www.rgs.org. Royal Geographical Society. Archived from the original on 10 May 2017.
McCloy, Andrew; Midgley, Andrew (2008). "Hardknott Fort". Discovering Roman Britain. New Holland Publishers. pp. 132–139. ISBN9781847731289. Archived from the original on 21 August 2016.
"Roads". Industrial History of Cumbria. Cumbria Industrial History Society. Archived from the original on 25 May 2016.
"1:50 000 Scale Gazetteer". www.ordnancesurvey.co.uk. Ordnance Survey. Archived from the original on 17 April 2016. Retrieved 11 May 2016. This product is still available to download although it has been officially "withdrawn".