Second tallest volcano on Mars is higher than Mount Everest. See pictures
The height of Ascraeus Mons is measured 18 km in height and has a huge base diameter of 480 km, giving it a footprint roughly the size of Romania on Earth.
The European Space Agency (ESA) has captured pitted, fissured flank of Ascraeus Mons which is the second-tallest volcano on the planet Mars. Report also claim that Ascraeus Mons height is twice the height of the Earth's tallest mountain, Mount Everest.