Schneidemühl was the main camp in the region, but up to 40% of the prisoners registered there actually lived at satellite camps (Aussenlager) or on work details (Arbeitskommandos, AK) up to 70 miles away. Langensalza (now Inowrocław) AK was 67 miles away, so Klaushagen Kreis Neustettin (now Kluczewo, coordinates 53.6497 16.1875, 40 miles from Schneidemühl/Piła) is not really too far.
The closest satellite camp I can find mention of is Groß Born (now Borne Sulinowo), 15 miles from Klaushagen, but apparently this was only for NCOs, so your Private Chisholm would not have been held there. However, there must have been small camps and AKs all over the place, because in 1915 for example, about 18,000 Schneidemühl-registered PoWs were not at Schneidemühl, but at other camps in the region.
Interestingly, though probably coincidentally, only three miles from Klaushagen is a village that used to be called Schneidemühl (Schneidemühl bei Zicker, now Żerdno). But the Schneidemühl in the service record most likely refers to the central camp.
Company Quartermaster Serjeant T Duggan is listed among prisoners at Schneidemühl at
http://www.alsbury.co.uk/ww1/pila/pila_men.htmThe Royal Forest (Königlicher Forst Klaushagen, variously referred to as Klaushagener Forst, Forst Fünfsee, later Staatsforst Klaushagen) is north of the town between the main road north (now Route 163) and Klöpperfier (now Chłopowo).
Couple of old maps of Klaushagen and environs
From 1903:
http://www.mapywig.org/m/German_maps/1870-1919/200K/400dpi//TUDR_46_Labes_1903-14.jpgFrom 1936:
http://amzpbig.com/maps/2363_Pohlen_1936.jpg(let them load, then you should be able to right-click and Save As to your hard disk for easier viewing)
Adrian
