Falls in washover chute of Olmstead Island looking downstream Location: C&O Canal National Historical Park near Potomac, MD Year: 2008 Merckdigitals catalogue number: 06-50027 Comments:

Falls in washover chute of Olmstead Island looking upstream Location: C&O Canal National Historical Park near Potomac, MD Year: 2008 Merckdigitals catalogue number: 06-50029 Comments:

Outcrop on Olmstead Island boardwalk Location: C&O Canal National Historical Park near Potomac, MD Year: 2006 Merckslides catalogue number: 06-23112 Comments:

Outcrop on Olmstead Island boardwalk Location: C&O Canal National Historical Park near Potomac, MD Year: 2006 Merckslides catalogue number: 06-23111 Comments:

Reflection in Olmstead Island vernal pool Location: C&O Canal National Historical Park near Potomac, MD Year: 2008 Merckdigitals catalogue number: 06-50037 Comments:

Deposits of fresh-water clam shells on Olmstead Island Location: C&O Canal National Historical Park near Potomac, MD Year: 2008 Merckdigitals catalogue number: 06-50034 Comments:

Deposits of fresh-water clam shells on Olmstead Island - detail Location: C&O Canal National Historical Park near Potomac, MD Year: 2008 Merckdigitals catalogue number: 06-50035 Comments:

Vegetation on Olmstead Island Location: C&O Canal National Historical Park near Potomac, MD Year: 2006 Merckslides catalogue number: 06-23801 Comments:

Newark supergroup canal lock stone as float Location: C and O Canal National Park - Olmstead Island boardwalk, MD Year: 2009 Merckslides catalogue number: 06-71123 Comments:

Parasitic fold in schist Location: C and O Canal National Park - Olmstead Island boardwalk, MD Year: 2009 Merckslides catalogue number: 06-71129 Comments:

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