e) While Aboriginal people have long inhabited the area, miners first moved to Coober Pedy in 1916 after the discovery of opal in the surrounding rocks.
a) As a result of the intense heat, a number of miners living in town have chosen to live underground.
d) This has continued with much of the modern town being built underground.
b) Among the local public buildings found underground are three churches, a bookstore, an art gallery, a bar, and hotels.
c) Opals can be seen embedded in the walls of some of these hotel rooms.
