Earth From Space: Tidal Island (by europeanspaceagency)
This image acquired on 3 May 2012 from the Pleiades satellite shows the island of Mont Saint Michel and its surrounding bay in northwest France. Mont Saint Michel was a tidal island, meaning that it was surrounded by water at high tide and only when the waters receded was it reachable by foot. In the late 1800s, the causeway was raised to make it accessible from the mainland at all times. In this image, we can clearly see where the water meets the mud flats, with multiple channels weaving through the mud.
For more information and a higher resolution of this image, please visit: http://www.esa.int/esaEO/SEM3MN2VW3H_index_0.html
Credits: CNES 2012/Astrium Services/Spot Image
Fuente: Flickr / europeanspaceagency
Purple Fluorite Cubes, Mapimi, Durango (by cobalt123)
Purple Fluorite Cubes, Mapimi, Durango - Cobalt blue cubes of fluorite crystals, purple that tends towards blue, from Mina Ojuela in Mapimi, Durango. Shot through the glass display case, the central crystal measures about 3/8” square.
Fuente: Flickr / cobalt