Today I got a beautiful postcard from Australia! The postcard features a great view of Hanging Rock, which is located within the Blue Mountains. Sandstone cliff formations are scattered all throughout the landscape. The Blue Mountains played a part in Australia's history because it served as a barrier to expansion for the first European settlers in what is now known as Sydney. The Blue Mountains blocked the way to the much needed additional farmland and they were first crossed by Europeans in 1813. This event is still commemorated up to this day. Nice transportation stamps were used! Thanks Don!