In January 2005, the Huygens probe reached the largest satellite of Saturn, Titanium. During the landing of the probe he took several photos and recorded some videos. Now these videos and photographs have been made available on the Internet at the address of Descent Imager (www.lpl.arizona.edu/DISR/). The following figure shows an example: these are sequences of images taken from five heights in the directions of four cardinal points. You can see the sequences taken west, north, east and south, from left to right.