I would say it looks like a Miscanthus to me, and if as you say it's all dried up now with no hint of green anywhere, then it will need cutting right down so new grass will begin growing.
It's quite a dark photo, but from your description, l'd say it's possibly a miscanthus. Is there any chance you could take a current photo? While you're there, have a look and see if you can see new green growth at the base.
Looks to me like it may be a stipa "pheasant's tail" in which case you just comb out the dead stuff. Wear gloves or use a rake head to save your hands.
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https://www.rhsplants.co.uk/plants/_/anemanthele-lessoniana/classid.2000011924/