Image made in Apuseni Mountains, Romania. It was a great morning with beautiful conditions. In the image we can see Vulcan Mountain 1263 m alt. The nature reserve is a huge limestone mass located on the watershed of the Crisul Alb and Arieș River. Mount Vulcan has an area of 5 ha, covered by forests, pastures and meadows. From a geological point of view, the mountain is a zoogenic-coraligenic calcareous reef, with a texture in massive stratified banks, yellow-gray, with remains agglutinated by a recrystallized calcareous cement. In the fragments detached from the walls of the Volcano, we can see fossil remains characteristic of the coral shape, which generated huge layers of limestone in the warm seas of the Mesozoic. For its landscape and geological value, the mountain has been declared a natural monument.