The third largest river in Africa, the Niger, forms an inland delta in central Mali. This image is from NASA's Terra satellite is MISR Mystery Image Quiz #3.
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Where on Earth...? MISR Mystery Image Quiz #4: Mali, Africa

Here's another chance to play geographical detective! This Multi-angle Imaging SpectroRadiometer (MISR) image covers an area measuring about 400 kilometers x 450 kilometers, and was captured by the instrument's vertical-viewing (nadir) camera on October 29, 2000. Use any reference materials you like and answer the following three questions:

1. The prominent green area is a seasonal wetland associated with what river?

2. To the east of this river is an escarpment included on the United Nations World Heritage List. Which one of the following statements cannot be applied to the people who live there?
A. They live in dwellings constructed from the surrounding sandstone cliffs.
B. They stopped making ceremonial masks at the end of the 19th century.
C. Some writers attribute them with detailed knowledge about a binary star system.
D. Among their major crops are onions and millet.

3. A small city with a rich cultural heritage is located near the top of the image. A particular spelling of this city's name can be found in the title of how many of the following?
--A public television adaptation of an American novelist's writings.
--An Internet communications software application.
--A song written by a composer born in Rochester, New York.
A. Only one
B. Exactly two
C. All three

E-mail your answers, name (initials are acceptable if you prefer), and your hometown by Tuesday, November 6, 2001

Answers will be published on the MISR Quiz page in conjunction with the next weekly image release. The names and home towns of respondents who answer all questions correctly by the deadline will also be published in the order responses were received. The first 3 people on this list who are not affiliated with NASA, JPL, or MISR and who did not win a prize in the last quiz will be sent a print of the image.

A new "Where on Earth...?" mystery appears as the MISR "image of the week" approximately once per month. A new image of the week is released every Wednesday at noon Pacific time on the MISR home page, The image also appears on the Earth Observatory,, and on the Atmospheric Sciences Data Center home page,, though usually with a several-hour delay.

MISR was built and is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Office of Earth Science, Washington, DC. The Terra satellite is managed by NASA's Goddard Space Flight Center, Greenbelt, MD. JPL is a division of the California Institute of Technology.

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Multi-angle Imaging SpectroRadiometer (MISR)



Full-Res TIFF:
PIA03429.tif (7.02 MB)

Full-Res JPG:
PIA03429.jpg (0.31 MB)

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