Emmenthal is a Swiss cheese. Emmenthal comes as 100kg (250 lb) cartwheels, which when opened reveal "eyes" or holes throughout the paste. Emmenthal has a natural rind and is softer and blander than Gruyère and draws threads when cooked.
Dowell, P., Bailey, A. (1980) The Book of Ingredients, Dorling Kindersley. ISBN 0718119150.