…Anguis fragilis (aka deaf adder, slowworm, blindworm, long-cripple or hazelworm.
Actaully a legless lizard
Making tracks between rue (Ruta graveolens) and Swiss chard, having recently shed its skin and on the look-out for snails, slugs and other predators
Mainz Daily Photo 
What does this blind creature use to sense predators?
It’s not actually blind – folklore due to its small eyes. I imagine sense of smell as do most reptiles