What we see here is a culture(s) that used gigantic stones (to various degrees depending on their cultural ability) the way we use cement today. Some countries build large buildings, some countries build the biggest buildings in the world. Some build star observatories and some build graves but they all use big stones to be best of their culture’s ability & resources just like we do today. Any objects made of wood of that culture has long since disintegrated. Only objects made of stone or bone etc can last the thousands of years necessary for us to find any remains.
A bull, fox and crane.