A very old river

We have a free camp spot along Stuart Highway at Finke River. The toilets are clean, there is water (though not drinking water), fire pits and a nearly always dry Finke River. Finke River is one of the oldest rivers on earth, perhaps more than 400 million years old. It stopped carrying permanent water some 40 million years ago. These days, water that comes into the river from the occasional rain never reaches the ocean: it dries up in the Simpson Desert or it goes underground to replenish the ground water. I walk on this old river. What a cool place!