This post is super late, but I had it all written with photos so thought I would just post it anyway!! We are in Alice Springs and in the next post will fill you all in on our latest change of plans!!!!
I had been really excited about
experiencing this whole staying underground business so we spent a couple of
nights above ground in the caravan park whilst we had a
look around town and
then treated ourselves to 1 below ground.
Opal itself is a solution of hydrated
silica that has been concentrated by evaporation to forma gel which permeated
through sandstone and deposited in cracks and cavities in the rock below. Over 2 million to 70 million years since
then, this gel has hardened under great pressure to form……OPAL. The amazing colours produced come from very
small spheres of silica, the way they are stacked causes them to act as a prism
and as such, this ‘play of colour’ changes when you move the stone, so every
opal is unlike any other opal! The main
factors that determine the value of an opal are its ‘brilliance’, the colours
visible (predominant red colours are the most expensive then green and then
blue), the pattern, the weight and to a lesser degree the shape.
This is the oldest underground church in town.


I will leave you with the hilarious warning
signs that are everywhere around town!!!