Ruidoso, New Mexico Activities White Sands National Monument Rising from the heart of the Tularosa Basin is one of the world's great natural wonders -- the glistening white sands of New Mexico. Hike among the incredibly soft and brilliantly white sand dunes of White Sands National Monument, where mounds of sand are growing, cresting, then slumping, but always advancing. Be sure to bring lots of water, sunblock, a hat, and sunglasses.