lensois-maranhensis national park in brazil

lencois maranhenses national park brazil sand dunes lagoons ecosystems natural beauty adventure hiking wildlife biodiversity photography tourism desert landscape maranhenses river protected area reserve unique terrain wonders eco-tourism seasonal landscapes rainwater geographical features flora fauna cultural heritage maranhão state climate travel destination outdoor activities scenic views breathtaking vistas conservation eco-systems indigenous culture sandy plains trekking geological formations nature trails lush vegetation serenity remote adventure phenomena exploration pristine environment beaches changes