Studies of volcanic terrains provide many surprising vistas of 'Nature imitating Nature'.
Especially, hot springs with their colourful Algae
colonies present interesting variations in texture and colour.
Small hot spring at Las Maquinas, Copahue Volcano,
Does this look like a stomach -with acid reflux disease- or what?
ALGAL COLONIES COLOURED ACCORDING TO WATER TEMPERATURE:
THE WHITE FILAMENTOUS ALGAE OCCUR IN THE HOTTEST WATER (60-70 OC),
THE BROWN ONES ARE COOLER AND THE GREEN RIM ALGAE ARE THE COOLEST DUDES
Las Maquinitas, Copahue, Argentina