Then she helped Khalid to the engineer’s seat in front of the controlling levers and took her place in the conning-tower. She had scarcely been at her post half an hour before she saw the huge white cones of the twin mountains of Antarctica shining against the dull grey sky beyond, one of them crowned as she had last seen it by a long stream of smoke that rose almost vertically in the windless air. She signalled to Khalid to reduce the speed, first to fifty and then to thirty miles an hour, allowing the _Revenge_ at the same time to sink gently down towards the ice-covered continent. She crossed the well-remembered bay in which the _Narwhal_ had performed her terrible exploit, swept over the ice-wall at an elevation of a hundred feet, swung the ship round and stopped her in front of the great cleft in the side of Mount Terror. No human foot seemed to have trodden the Antarctic solitude from the day she left it to crown herself Tsarina of the Russias to this one on which she brought her flagship back with its crew of murdered men to seek her last chance of life amidst the general doom which she could now almost bring herself to believe she had directly brought upon the world. She ran the _Revenge_ slowly into the vast portal that yawned black and deep before her between the snow slopes of the mountain, and then, turning on the search-light, took her along the great gallery which led to the shore of the subterranean lake, and there lowered her for the last time to the earth. Then she and Khalid disembarked, he moving slowly and painfully, and she supporting him as well as she was able, and watching him with the intense anxiety of a supreme selfishness which had now centred itself upon him as the one possibility of making her life endurable. Thus did Tsarina Olga and Khalid the Magnificent, conquerors of the earth and sharers of the world-throne, come back, one wounded almost to death, and the other half distraught with fear and perplexity, to take refuge at the uttermost ends of the earth from the assault of the foe that had confounded all their schemes of conquest. Leaving the _Revenge_ in the great gallery, she led him to the council chamber and laid him on the cushions of the luxurious divan on which she had been wont to hold her audiences. There she examined and redressed his wound, and then for the next three hours she busied herself bringing supplies of food and drink from the ship and preparing for the final siege which their last stronghold would so soon have to endure.