article_snippet: it may look like a stunning rainbow of colour, but the psychedelic hue of this hot spring in Yellowstone National Park, is a result of years of unintended vandalism by visitors.
article_snippet: The Morning Glory hot spring in 1940.
article_snippet: The photograph reveals a stark contrast to the fiery colours now exhibited at the tourist attraction .
article_snippet: The fierce colours are influenced by how light interacts with the water’s depth, with yellow and orange colours in the shallows and green in the deep waters .
article_snippet: The rainbow hot spring has been clogged up with debris, which block the heat vents, and affecting the water circulation in Pool on fire .
article_snippet: The rainbow hot spring is estimated that the destruction of The rainbow hot spring has been building up for decades.
article_snippet: Research by Montana State University and Brandenburg University of Applied Sciences in Germany helped to create a model that could depict The rainbow hot spring's colours from over a century ago, when it was less frequented by visitors.
article_snippet: As the underwater vents started to get clogged up, water circulation was affected, decreasing the temperature of the deep waters and causing a migration of the orange-coloured bacteria towards the centre.
highlights_snippet: Debris has blocked underwater vents, causing a rise in the spring temperature .
  