So when the time came, and that time was in the summer in the first year after the death of Ceryl, that being also the first year after the winter when the goats' milk froze in their udders, Dos betook himself down to the marsh, and he saw five times five white-legged cranes, and each crane had a silver chain about it's neck, except that the mesh of the chains was so fine that it be like spider silk, and so strong that not even the chisel of a smith might break it, not even the hammers of Clueuntaggt…

The Chaos Balance - page:200

Nylan finds this in the library at Lornth