It is quite common for tourists to get into trouble here in Australia due to the differences in climate etc too.

FYI, when you travel make sure to bring extra clothes, water and food. Australia is a massive land mass and it is hard to fathom for people form a lot of countries that it can be a very harsh place for the unprepared.

http://blog.australian-native.com.au/wp-content/uploads/2009...

Never have a single point of failure. A paper map or extra GPS at the bare minimum.