The video shows the germination and dieback process of grasses in the Fairy Circle E91 at the Giribesvlakte Observatory triggered by a rain of 32mm that fell at 12 February 2022, see time table attached.

Differing from the two video proofs shown at the Dieprivier Observatory, in this case there are surviving grasses in the adjacent perennial belt and in the surrounding matrix landscape. Surviving tussocks in the perennial belt are the first to sprout two days after the rain.

However, as at Dieprivier, the dieback of the grass in the fairy circle does not start at the margin (as is assumed by the self-regulation hypothesis that assumes a withdrawal of soil moisture by the surrounding older grasses), but the dieback starts in the centre of the fairy circle and then progresses towards outside alongside three tunnels systems that are indicated by the small sand dumps.)These sand dumps are ejected by the sand termites when they clean their tunnel system in the early morning hours. At the end of the video a graph shows the location of all sand dumps (white arrows), dead grass plants (black arrows) along three termite tunnel systems that progress from inside to outside.

A webcam was installed on this study site to track and document the development of the fairy circles over time. Once every day at 12 noon, a landscape photo is taken. When all of these individual shots are combined, the video gives an overall impression of the quantity, size, and vegetation condition of the fairy circles and tracks of animals in time-lapse. The video can be downloaded here as a file.

The time lapse video shows the changes of many fairy circles in the Giribesvlakte during more than six years (2245 days), spanning the period from 04.12.2015 until 26.01.2022. On right hand side the outcrops of Leopard are visible. In the direct foreground a fairy circle is inhabited by a colony of the ant species Carebara kunensis. These ants exclude the sand termites from the territory directly adjacent to their nest and its several ports. The observation carries on and the video will be extended in not too distant future.

All this information is also presented in a book on fairy circles, shown in the Fairy circle book.