Olga was also very interested in natural science and collected minerals systematically. Her collection was left to the Staatliche Museum für Naturkunde in Stuttgart. As of 2011 part of the collection is still on display. Her name is attached to a geological formation in the Northern Territory, Australia. In 1871, Charles elevated the German-born Australian explorer Ferdinand Mueller to Baron von Mueller. He repaid the compliment as follows. A series of massive rock formations was discovered by the British-born Australian explorer Ernest Giles in central Australia in 1872. Mueller was Giles' benefactor. Giles had wanted to name the tallest peak Mt. Mueller, but Mueller prevailed on Giles to name it Mt. Olga, in honour of the queen. The entire geological formation then became known as The Olgas, before the indigenous name Kata Tjuta was officially proclaimed in the 1980s.