The Vredefort crater is approximately 300km in diameter and is thought to be the largest impact site on earth. The photographs taken by us, in Vredefort and Parys, lie within the crater. No, we did not take this photograph! Hey... wait a minute... Merle did wander off for a short while...
Credit: Earth Sciences and Image Analysis Laboratory,
NASA Johnson Space Center (Image STS51I-33-56AA)
