I am so very, very busy today, so my apologies for the delay. This photo was taken at Fossil Bluff in Wynyard, one of the most important geological monuments of Tasmania. East and west of the beach and at intervals for many kilometres to the east is a low flat gray rock known as the Wynyard Tillite, which is about 280 million years old and having been formed in the age of glaciations while Australia was part of the super continent called Gondwana. The glaciers flowed from the south towards the north and when they were melting and reached areas of depression they slowed down, and dropped the rocks they were carrying. Over time, mud covered the rocks, which became a mudstone conglomerate. You can find granites, cherts, quartz, jaspers and agates in the tillite, and on the beach as small pebbles. Just behind where I took this photo is a sandstone Bluff, with layers of fossils encased in the stone. You can see the sandstone here . This Bluff was beneath the sea in the Oligocene geological ...