Changes in the shape of the big prominence in half an hour

The sources of the pictures are: (left up) http://www.comet-track.com/eclipse/secl01/secl01.html ; (right up) http://www.sussenbach.myweb.nl; (left down) http://www.astronomie.de/reisen/zw-2001/sofi.htm; right down) http://www.astronomicaltours.net/AstronomicalTours/index.html