We have just travelled down New Zealand's 'Thermal Explorer Highway', a road through an area of New Zealand famous for all it's underground activity, and look what I stumbled upon...this alien-looking bit of land is a natural thermal vent in the earth's crust.
You can spot the steam coming right out of the ground as water below is naturally heated up to hundreds of degrees. The green colour is caused by sulphur forming on the surface and it makes one almighty pong. I was unlucky enough to have my mouth slightly open as the wind changed and blew towards me...think of an egg sandwich left in a hot car all day and you'll be close to imaging the smell! Not nice!
Just down the road from here was a bubbling mud pool the size of a football pitch too. It looked just like a giant chocolate milkshake that someone was blowing bubbles into through a straw with the occasional eruption of mud spewing a few feet into the air.
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