“Ruh?” the giant bellowed. “Ruh!”
He took a deep breath and blew out a wave of cold air. Even under the protection of the giant’s legs, Percy could feel the temperature drop. The gryphons’ shrieking stopped abruptly, replaced by the thunk, thunk, thunk of heavy objects hitting the mud.
“Come on,” Percy told his friends. “Carefully.”
They squirmed out from under the giant. All around the marsh, trees were glazed with frost. A huge swath of the bog was covered in fresh snow. Frozen gryphons stuck out of the ground like feathery Popsicle sticks, their wings still spread, beaks open, eyes wide with surprise.

The Son of Neptune, Chapter XXXIX