This is the 3-D anaglyph showing
a microscopic image taken of soil featuring round, blueberry-shaped
rock formations on the crater floor at Meridiani Planum, Mars.
This image was taken on the 13th day of the Mars Exploration Rover
Opportunity's journey, after the Moessbauer spectrometer, an instrument
located on the rover's instrument deployment device was pressed
down to measure the soil's iron mineralogy. The area in this image
is approximately 3 centimeters (1.2 inches) across.
