1845 Twenty-fourth recorded eruption. It began on September second and continued without cessation for seven months. The ashes rose miles in the air and were carried by the wind to the Shetland Islands and to Norway. During this eruption, it is estimated that 500 feet in altitude of the top of the mountain was blown into fragments and hurled in places to a distance of fifteen miles or more. Hot sand, ashes and scoriae were ejected in a constant fountain from the crater and the mountain itself opened lower down, and from this rift came the floods of lava that flowed for seven months destroying everything in its path. It has been estimated by the Danish survey that the mass of melted rock poured out, (not counting sand, ash and scoriae), from this rent is 14,500,000 cubic feet. 1913 Twenty-fifth recorded eruption. At three in the morning of the twenty-fifth of April, Friday, there was a violent earthquake shock in the region of _Hekla_ and several houses fell, notably the ancient one at _Galtalaekur_, to which special reference has been made in this chapter. Heavy smoke poured from two sources and fine ashes fell between the _Thjórsá_ and the _Hvitá_. On the thirtieth of April the lava spouted over 1000 feet into the air and on the first of May a rift opened that was over 600 feet in length. Moderate action continued until the eighth of May. During the eighth and the ninth of May the action was violent and the outflowing lava covered an area two miles in length by one in width. _Krakatindr_ is a small peak on the eastern slope of the _Hekla_ field and _Lambafell_, Lamb Mountain, is another in the same locality. Here the eruption was central and in the last mentioned ridge the lava broke out in ten distinct places. It must be remembered that the 1913 eruption of _Hekla_ did not come from either of the summit craters, but from the foot hills and buttresses of this mountain. It must be regarded as an eruption of _Hekla_ when dealt with scientifically. The mass of lava, slag and ashes on the summit of _Hekla_ will preclude any future activity within the ancient craters; but, future action, like this of 1913, will take place in rifts in the sides and at the foot of this volcano, since it is in this lower crust that the mountain is weakest.