Kosta Boda Fortress Hidden StairsIn the hands of Bertil Vallien, the message through glass is both visible and hidden. With a love for nature with his daily walks in the woods and along the water he has learned a great deal about how the earth tells stories. When he casts stairs in a block of glass, as in Hidden Stairs (and makes them impossible to tread), he creates something that is both real and not real. How did the stairs end up there? As if the glass had come up with the word