The Mars Rover Curiosity has found crossbedding at area inside Gale Crater called "Glenelg." Not only does this show that water once flowed here but the direction of that flow as well. This is actually predicted by the catastrophic model of past water at this site, Since the catastrophic model has the water flowing over Mount Sharp in a northern direction the model would has the water flowing at a consider rate which is consistent with this cross bedding, However it gets even better because this crossbedding also shows the direction of the water flow.
It show the the water that laid down this crossbedding flowed from
------ Charles Creager Jr.