Figure 1 - The Inca Trail Leads to the Mystic Ruins of Machu Picchu, Peru

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Figure 1 - The Inca Trail Leads to the Mystic Ruins of Machu Picchu, Peru

The Old Inca Roadway runs alongside the Rio Urubamba River, leading explorers, poets, pilgrims and tourists through Peru’s sacred valley of subtropical jungle and mountain vistas to the lost citadel, the awe-inspiring ruins of Machu Picchu, appearing in the lower right of this image at the top of the cliff. The Inca Trail is part of the 30,000-meter “Royal Highway” built to connect the four corners of the Tawantinsuyo, or Inca Empire.

At the top left of the image, the town of Cuzco is visible, 43 miles to the southeast of the ruins, which are at 9,060 feet altitude. (Note that south is the top of this image.)

This is a QuickBird image from DigitalGlobe acquired on June 18, 2002.

Figure 2 - Laguna Madre, Texas

Extending inland from the western coast of the Gulf of Mexico, and separating Padre Island from the Texas mainland, Laguna Madre is the only lagoon in the United States saltier than the ocean. The Nueces and Rio Grande Rivers encircle the lagoon, which is home to remarkable ecological diversity, including endangered sea turtles.

This image is a color-infrared digital orthoimage quarter quad at a 1-m pixel resolution, acquired by EarthData on July 14, 2004. It is part of a statewide effort to develop color-infrared imagery of Texas for the U.S.D.A.’s National Agriculture Imagery Program.

Figure 3 - McMurdo Research Station, Antarctica

Established in 1956, McMurdo Station is Antarctica’s largest community, located on Ross Island. The research station is built on the exposed volcanic rock of Hut Peninsula, the farthest south solid ground that is accessible to ships. Originally an outpost, McMurdo Station has flourished into a logistics facility supporting about 1,000 people, consisting of more than 100 structures, including an airport and a harbor. Numerous buildings and silos can be identified in the image as well as a ship at the edge of the Ross Ice Shelf.

Each year the United States sends 600 researchers from all fields to this arctic outpost. The fine texture on the snow cap can be used to study the movement of the glacier and the climate condition.

This natural color image was collected by GeoEye’s OrbView-3 satellite with 4-m multispectral resolution.

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