Complex sentence: It was discovered in October 1933 by the Hungarian explorer László Almásy.The site contains rock paintings of human figures who appear to be swimming, which have been estimated to have been created at least 6,000--7000 years ago.
Split into simpler sentences: It was discovered in October 1933 by the Hungarian explorer László Almásy. It contains rock paintings of human figures who appear to be swimming, which have been estimated to have been created at least 6,000--7000 years ago.