Piauí has the shortest coastline of any of the non-landlocked Brazilian states at 66 km (41 mi), capital, Teresina.
In the Southeast of the State is the National Park of Serra da Capivara is a UNESCO World Heritage Site. The park has more than 400 archaeological sites and the largest concentration of rupestrian (rock) paintings on the planet, in a landscape dominated by canyons and caatinga. http://en.wikipedia.org/wiki/Piau%C3%AD
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