Herman Giethoorn:
Lake Huron shore, Kettle Point area
Herman Giethoorn:
Shale Formation, 01
Herman Giethoorn:
Shale Formation, 04
Herman Giethoorn:
Shale, 07
Herman Giethoorn:
Shale, 10
Herman Giethoorn:
Concretions
Herman Giethoorn:
Concretions
Herman Giethoorn:
Concretion (1)
Herman Giethoorn:
Concretion
Herman Giethoorn:
Concretion (3)
Herman Giethoorn:
Kettle rock (2)
Herman Giethoorn:
Kettle rock (3)
Herman Giethoorn:
Concretion on beach
Herman Giethoorn:
Kettle rock (13)
Herman Giethoorn:
Kettle rock (12)
Herman Giethoorn:
Kettle rock (7)
Herman Giethoorn:
Kettle rock (10)
Herman Giethoorn:
Rocks along shore
Herman Giethoorn:
Fossil Coral, 10
Herman Giethoorn:
Fossil Coral, 13
Herman Giethoorn:
Fossil Coral, 11
Herman Giethoorn:
Coral fossil in limestone (2)
Herman Giethoorn:
Coral fossil in limestone (1)
Herman Giethoorn:
Coral fossil in limestone (6)
Herman Giethoorn:
Fossil Coral, 02
Herman Giethoorn:
Fossil Brachiopod