The majestic cliffs of Tracy Arm Fjord

Waterfalls abound throughout Tracy Arm Fjord

Waterfalls abound throughout Tracy Arm Fjord

Waterfalls abound throughout Tracy Arm Fjord

Waterfalls abound throughout Tracy Arm Fjord

A wake disturbs the placid waters of Tracy Arm Fjord

A bergy bit floating quietly in Tracy Arm Fjord

The Sawyer Glacier at the head of Tracy Arm Fjord

The Sawyer Glacier at the head of Tracy Arm Fjord

A close-up of the Sawyer Glacier

Crystal clear glacial ice

Bogoslof Island, a chronic piece of land that comes and goes with various eruptions. Presently above the water surface and a home for marine mammals and birds.

An Aleutian Island peak looms in the distance.

The ironbound shores of the Aleutians

An Aleutian peak and coastline

An Aleutian peak and coastline

Winter cruising in the Aleutian Islands

An Aleutian volcano seen through the A-Frame

An Aleutian volcano and coastline

An Aleutian peak and coastline

Sunset at sea.

Gulls on a sandy bottom area at low tide. Ripples indicate fairly high energy tidal currents.

Gull on a sandy bottom area at low tide. Ripples indicate fairly high energy tidal currents.

Washington Monument and Smithsonian Institution as seen from Potomac River. In: "Protection from Lightning" by Alexander McAdie. 1894. Library Call Number TH 9057.M3 1894.

Giant sandwaves as seen from NOAA helicopter during SHOALS Lidar survey.

Giant sandwaves as seen from NOAA helicopter during SHOALS Lidar survey.

Giant sandwaves as seen from NOAA helicopter during SHOALS Lidar survey.

Giant sandwaves as seen from NOAA helicopter during SHOALS Lidar survey.

Giant sandwaves as seen from NOAA helicopter during SHOALS Lidar

Alijos Rocks in the middle of nowhere off the Mexican Coast.

Alijos Rocks in the middle of nowhere off the Mexican Coast.

Alijos Rocks in the middle of nowhere off the Mexican Coast.

Niagara Falls as seen during Shoals Lidar survey of Niagara River.

Niagara Falls as seen during Shoals Lidar survey of Niagara River.

Niagara Falls as seen during Shoals Lidar survey of Niagara River.

Niagara Falls as seen during Shoals Lidar survey of Niagara River.

Niagara Falls as seen during Shoals Lidar survey of Niagara River.

Chicago as seen during Lake Michigan SHOALS Lidar survey

Great Lakes ore carrier in lower right at Sault Ste. Marie

Chicago lakefront.

Niagara Falls from the air.

World Trade Center at New York during transit between SHOALS Lidar survey sites.

Ellis Island

Statue of Liberty

The Battleship Alabama at Mobile.

Sunshine Skyway Bridge at Tampa Bay

Sault Ste. Marie locks

Dome of the U. S. Capitol Building.

Playa Jobos Beach near Isabela.

View from Buck Island Lagoon of east St. Croix. Telescope of National Radio Astronomy Observatory is visible.