Another new form was the skeleton vault, which appeared in the English Decorated style. It has an additional network of ribs, like the ribs of an umbrella, which criss-cross the vault but are only directly attached to it at certain points. It appeared in a chapel of Lincoln Cathedral in 1300. and then several other English churches. This style of vault was adopted in the 14th century in particular by German architects, particularly Peter Parler, and in other parts of central Europe. Another exists in the south porch of Prague Cathedral