"Cuchulain strode into the wood, and there, with a single blow, he lopped the prime sapling of an oak, root and top, and with only one foot and one hand and one eye he exerted himself; and he made a twig-ring thereof and set an ogam [b] script on the plug of the ring, and set the ring round the narrow part of the pillar-stone on Ard ( 'the Height') of Cuillenn."