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@@ -59,8 +59,8 @@ Acknowledgments for help with Cloudy are on the [AcknowledgmentsPage](Acknowledg
 
 *Nick Abel has created a pair of animated gifs showing the time evolution of an H+ region* 
 with PDR after its ionizing star is turned off and then turned back on.
-The [first](http://www.nublado.org/time_dep_recom.htm) animation shows an
-[Advancing ionization front](Advancing ionization front)
+The first shows an
+[Advancing ionization front](https://data.nublado.org/plots/advancing_ionization_front.gif)
 the cloud recombining and becoming molecular and
 the [second](http://www.nublado.org/time_dep_ioniz.htm) shows the hydrogen ionization front moving across the cloud.