What will it metamorphose into?

What will it metamorphose into?

Observation - What will it metamorphose into?. Description: Beautiful caterpillar about 5 - 6cms long seen in wet long grassy area close by Fen Bog, North York Moors, not eating anything at the time.(That's the caterpillar wasn't eating anything, not me!) I'd love to know what this impressive caterpillar will beco

Beautiful caterpillar about 5 - 6cms long seen in wet long grassy area close by Fen Bog, North York Moors, not eating anything at the time.(That's the caterpillar wasn't eating anything, not me!) I'd love to know what this impressive caterpillar will become.