Horses bone in RED SEA!!

Since there is no God, why do archaeologists found horses' bone in the Red Sea, the giant big huge Red Sea??
God parted the sea into half last time, when he tried to save Moses and his people..
And God drown all the bad guys with chariots and horses into the Red Sea..
So, if its not God, how can horses' bone be inside the Red Sea??
Someone throw it in?? For what??
Some stupid horses ran into it and drown themselves??