The opening line of The Hobbit firmly belongs to the treasury of best-known book openers in literature. “In a hole in the ground there lived a hobbit”. This short sentence invites readers into a whole new world full of interesting places, charismatic characters and glorious deeds. Both in the world of Middle-earth and outside it this very hobbit-hole becomes the starting point of dangerous journeys and exciting adventures. So what exactly is this dwelling of a hobbit?