Distribution of erratics selected for sampling:
Boulders selected for sampling in 2015:
References:

Hermann R. 1911, Die erratischen Blöcke im Regierungsbezirk Danzig. Beiträge zur Naturdenkmalpflege, 2 (1).
Krawiec F. 1938, Flora epilityczna głazów narzutowych zachodniej Polski. Poznańskie Towarzystwo Przyjaciół Nauk, Prace Komisji Matematyczno-Przyrodniczej B9, 2 (in Polish).
Retreat of the last Scandinavian Ice Sheet in Poland inferred from cosmogenic (10Be) dating of glacial erratics (DatErr)
2015
2016
Erratics sampled in 2016
Erratics sampled in 2015
Boulders selected for sampling in 2016:
FRT-1 boulder; granitoid, perimeter 6.5 m, height 1.3 m
FRT-2 boulder; granitoid, perimeter 7.0 m, height 0.8 m
FRT-3 boulder `Pigeons Stone`; granitoid, perimeter 10.1 m, height 1.8 m
FRT-4 boulder `Goat Stone`; granitoid, perimeter 12.7 m, height 2.5 m
FRT-5 boulder `Sobierajski Stone`; granitoid, perimeter 8.7 m, height 1.6 m
FRT-6 boulder; granitoid, perimeter 8.2 m, height 1.6 m
FRT-7 boulder; granitoid, perimeter 8.9 m, height 1.2 m
FRT-8 boulder `Enchanted Tavern` - archival view (Krawiec 1938)
FRT-8 boulder `Enchanted Tavern`; granitic gneiss, perimeter 17.5 m, height 2.2 m
FRT-9 boulder `Oleszno Forest Stone`; granitoid, perimeter 13.5 m, height 1.3 m
FRT-10 boulder `St. Adalbert Stone` - archival view (Krawiec 1938)
FRT-10 boulder `St. Adalbert Stone`; granitoid, perimeter 20.5 m, height 1.1 m
FRT-11 boulder `Stone House`; gabbro, perimeter 13.1 m, height 2.9 m
LGM-1 boulder; gneiss, perimeter 8.7 m, height 0.8 m
LGM-2 boulder `Wilim Stone`; granitic gneiss, perimeter 5.9 m, height 1.9 m
LGM-3 boulder `Legowski Erratic`; granitic gneiss, perimeter 10.5 m, height 2.3 m
LGM-4 boulder - archival view (Krawiec 1938)
LGM-4 boulder; granitoid, perimeter 13.5 m, height 1.2 m
LGM-5 boulder - archival view (Krawiec 1938)
LGM-5 boulder; granitoid, perimeter 10.4 m, height 2.6 m
LGM-5 boulder - wide view
LGM-6 boulder; granitoid, perimeter 6.8 m, height 1.0 m
LGM-7 boulder; granitoid, perimeter 7.8 m, height 1.5 m
LGM-8 boulder; granitoid, perimeter 6.3 m, height 1.2 m
LGM-9 boulder; granitoid, perimeter 14.3 m, height 1.4 m
LGM-10 bouder; granitoid, perimeter 9.0 m, height 0.8 m
LGM-11 boulder; granitoid, perimeter 9.5 m, height 1.2 m
LGM-12 boulder; granitoid, perimeter 8.0 m, height 1.0 m
SAAL-1 and SAAL-2 boulders - archival view (Krawiec 1938)
SAAL-1 boulder; granitoid, perimeter 9.7 m, height 1.3 m and SAAL-2 boulder; granite, perimeter 11.1 m, height 1.7 m
SAAL-3 boulder `Stone of Priest Radolin` - archival view (Krawiec 1938)
SAAL-3 boulder `Stone of Priest Radolin`; granitoid, perimeter 9.5 m, height 1.1 m
SAAL-4 boulder; granitoid, perimeter 7.0 m, height 1.2 m
SAAL-5 boulder; granitoid, perimeter 8.8 m, height 1.4 m
SAAL-6 boulder; granitoid, perimeter 13.0 m, height 1.2 m
SAAL-7 boulder; granitoid, perimeter 9.5 m, height 1.8 m
FRT-12 bulder `Tempelburg`; gneiss, perimeter 19.0 m, height 3.4 m
FRT-13 boulder; granitic gneiss, perimeter 20.5 m, height 1.9 m
FRT-14 boulder; granitoid, perimeter 14.6 m, height 2.1 m
PM-01 boulder; granitoid, perimeter 12.3 m, height 1.7 m
PM-02 boulder; granitoid, perimeter 9.3 m, height 1.5 m
PM-03 boulder; granitoid, perimeter 7.0 m, height 1.1 m
PM-04 boulder; granitoid, perimeter 13.5 m, height 1.5 m
PM-05 boulder `Devil`s Stone`; granitoid, perimeter 12.5 m, height 1.8 m
PM-08 boulder `Tryglaw`; migmatite, perimeter 50.0 m, height 3.8 m
PM-09 boulder; gneiss, perimeter 10.8 m, height 1.0 m
PM-10 boulder; granitoid, perimeter 6.6 m, height 1.3 m
PM-11 boulder; granitoid, perimeter 10.5 m, height 1.6 m
PM-12 boulder; granitic gneiss, perimeter 13.0 m, height 1.7 m
PM-13 boulder; granitoid, perimeter 7.4 m, height 1.3 m
PM-14 boulder; granitic gneiss, perimeter 8.0 m, height 1.5 m
PM-15 boulde `Boulder with Beech`; granitoid, perimeter 8.0 m, height 1.3 m
PM-16 boulder `Three Gentleman`s Boulder`; granitoid, perimeter 12.5 m, height 1.4 m
PM-17 boulder - archival view (Hermann 1911)
PM-17 boulder; granitoid, perimeter 13.7 m, height 2.0 m
PM-18 boulder `King`s Stone`; gneiss, perimeter 6.1 m, height 1.5 m
PM-19 boulder - archival view (Hermann 1911)
PM-19 boulder; gneiss, perimeter 14.8 m, height 2.5 m
PM-20 boulder `Broken Stone` - archival view (Hermann 1911)
PM-20 boulder `Broken Stone` - archival view (Krawiec 1938)
PM-20 boulder `Broken Stone`; granitic gneiss, perimeter 17.6 m, height 3.1 m
PM-21 boulder `Devil`s Stone`; gneiss, perimeter 16.0 m, height 1.7 m
PM-22 boulder `Devil`s Stone` - archival view (Hermann 1911)
PM-22 boulder `Devil`s Stone` - archival view (Krawiec 1938)
PM-22 boulder `Devil`s Stone`; granitoid, perimeter 20.5 m, height 2.7 m
PM-23 boulder `Devil`s Stone` - archival view (Hermann 1911)
PM-23 boulder `Devil`s Stone`; gneiss, perimeter 13.4 m, height 2.4 m
PM-24 boulder - archival view (Hermann 1911)
PM-24 boulder - archival view (Krawiec 1938)
PM-24 boulder; gneiss, perimeter 10.0 m, height 1.7 m
PM-25 boulder; granitic gneiss, perimeter 10.0 m, height 0.9 m
PM-26 boulder - archival view (Krawiec 1938)
PM-26 boulder; granitoid, perimeter 12.5 m, height 1.8 m
PM-27 boulder `Linden Stone` - archival view (Krawiec 1938)
PM-27 boulder `Linden Stone`; granitoid, perimeter 7.8 m, height 1.1 m
PM-28 boulder; granitoid, perimeter 12.5 m, height 1.7 m
PM-29 boulder; granitoid, perimeter 11.0 m, height 1.4 m
PM-30 boulder - archival view (Krawiec 1938)
PM-30 boulder; granitoid, perimeter 15.0 m, height 1.4 m
PM-31 boulder `Devil`s Stone` - archival view (Hermann 1911)
PM-31 boulder `Devil`s Stone`; granitoid, perimeter 12.5 m, height 2.7 m