Physical description
Sample of metamorphic rock encountered by M.M.B.W. gang of tunnellers boring for a sewer drain through a geological fault-dyke along the southern boundary of Hubbard Park. The hole for 900 feet of 12.5 inch pipe took 6 months to bore from Oct-1979 to May-1980.
Inscriptions & markings
Collected by J. Lundy-Clarke, Ringwood Historical Research Group.
