Stock Photo - Fragment of foot ring, bottom and wall of birch eggs, berkemeier drinking glass drinking utensils tableware holder soil find glass forest glass, free blown and formed glass application Fragment of foot ring bottom and part of wall of -lage? - berkemeier in clear green glass (forest glass) Under raised bottom pontilmark Rounded convex foot ring partially ribbed and over 2 cm rough worn off wall runs obliquely at the bottom part are four faded studs set of which 3 remain. Wall mounted on wall at 3 cm from the ground around narrow glass wire as transition to the goblet archeology Rotterdam railway tunnel medicine drug Soil discovery: rail tunnel Rotterdam.