A newly discovered panel of rock art is thought to contribute to an understanding on how heiroglyphic signs developed. A modicum of scepticism is in order – although one might think old ideas contributed to the new idea of sign language (or writing in the Egyptian style) – see https://phys.org/print417674434.html. In this instance, a bull's head on a pole and a back to back saddleback stork and a bald iris are depicted. It is said these figures became symbols in Egyptian representations of the solar cycle with an emphasis on luminosity. This is of course the mainstream uniformitarian explanation. In reality we have a reference to a highly luminous object in the sky. There is no indication, apart from assumption, that it has anything to do with the Sun.
The rock art dates from around 3200BC, it is thought. Other rock art nearby is dated to as early as 4000BC and depicts a herd of elephants. The El Khawy site is located near Elkab and ancient Heirakonpolis. Apparently, according to Yale's JC Darrell, rock inscriptions of this nature are generally located along ancient roads, especially at junctions and crossroads. This idea makes sense as travellers woud have been forced to slow down, or make a pause in their journeys – and therefore look around (to be confronted by the rock art).