Center pivot irrigation systems create red circles of healthy vegetation in this image of
croplands near Garden City, Kansas.
This image was acquired by
Landsat 7s Enhanced Thematic Mapper plus
(ETM+) sensor on September 25, 2000. This is a false-color composite image made using near infrared,
red, and green wavelengths. The image has also been sharpened using the sensors panchromatic band.