This is the gallery page for the episode "Portrait of Hiccup as a Buff Young Man".
The object embedded within the ice, with unlucky viking
The serpent at the edge of the world
Hideous Zippleback working in sync to remove the star stones
Reflected firelight reveals the third piece
The third piece (note the reflective surface, allowing Hiccup to "look to himself")
Hiccup discovers Hamish II's real portrait