The Hidden World — G.W. Thomas

Enter the world of Arthan the bear man! Traveling to the north, Arthan feels the loss of his love, Natali the wise woman. Strange men astride mammoths capture him and sacrifice him to a hole in the earth that leads to another world. In Thule, Arthan faces off against a race of lizard men before solving the secret that lies behind the countries of Sharn, Ilsic and the hated Datha. As he navigates this world, in search of a way home, he must combat another were-being!