Two photographs of Karori reservoir from 1988 and 2012, converted into an animation to show changes in the lake and surrounding forest over the 24 year interval.  After the lake level was lowered, the lake banks were reclaimed by natural regrowth of the forest.  Also many trees have grown, and a few trees have been removed (mainly exotic species) as part of <a href="https://en.wikipedia.org/wiki/Zealandia_(wildlife_sanctuary)" class="extiw" title="en:Zealandia (wildlife sanctuary)">Zealandia</a>'s 500 year restoration project.  Wellington, New Zealand.  The two images converted into a sequence of transitional frames using CombineZP, then a reversed sequence added on the end so that it can be played as a continuous loop animation.
Tony Wills
CC BY-SA 3.0
<a href="//commons.wikimedia.org/wiki/File:Karori_reservoir_1988.jpg" title="File:Karori reservoir 1988.jpg">File:Karori reservoir 1988.jpg</a>, <a href="//commons.wikimedia.org/wiki/File:Karori_reservoir_2012.jpg" title="File:Karori reservoir 2012.jpg">File:Karori reservoir 2012.jpg</a> (animation used the aligned versions that can be found in <a href="//commons.wikimedia.org/wiki/File:Karori_reservoir_1988_vs_2012.jpg" title="File:Karori reservoir 1988 vs 2012.jpg">File:Karori reservoir 1988 vs 2012.jpg</a> upload history)