#Travertine Columns created by the lime laced waters that turn #HavasuCreek Blue inside the #GrandCanyon. In the watershed above Havasupai, springs boil up through thick beds of limestone and that’s how the travertine winds up in the water. A private corporation is developing a uranium mine that could threaten the water system of the #Havasupai nation and there’s a petition out there to put a stop to their efforts: ift.tt/1WnD0Iw – we can keep it growing if you take a moment to sign… Who wants to swim in radioactive H2O!? ? ~ via Instagram: ift.tt/2b8yS0G