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Sunset at Lascaux 17,500 bp.
It is 8.56pm.on the evening of June 20th, 17,500 years ago, and we stand outside the Cave Of Lascaux. 

As we face towards the South west and the setting sun, we can start to make out the stars of dusk.  Over the past few weeks, Sirius has been getting lower on the horizon with each passing evening, and now starts to become lost in the glare of the setting sun, marking our Solstice.

Above Sirius, we now see Orion, Taurus, and Plieades and Gemini, followed by Hydra, Cancer and Leo.

On this sky,  we can now superimpose the bulls of Lascaux... We are now looking at the constellations as they appeared in the minds of the iceage hunters 17,500 years ago!