Yes there is a Chinook Wreck just off the ‘road’ that goes around the top of Mt Kent, it was taken out by a Harrier GR3 flown by Flt Lt Mark Hare on the morning of 21st May 82, with 30mm Aden cannon fire. There is wreckage of a Puma not that far away from it taken out in the same attack.
Both aircraft were from Batallon De Avivcion de Combate 601 (The Argentine Army's combat helicopter unit).
Chinook was AE-521 , while the Puma which was only damaged was AE-501 (It was finally destroyed by a BL755 CBU dropped from a GR3 flown by Sqn Ldr Jerry Pook 5 days later).
There is a third helicopter wreck close to Mt Kent, in the shape of Puma AE-508 that was lost in confusing circumstances on the night of 30th May 82. The Argentine Army reported that it was shot down by a British missile, though no British unit claimed a engagement that night, hence there is a possibility that it was an Argentine own goal. That wreck is about 2Km to the East North East of the Chinook.
I've had chance to have a good look at the Chinook wreck, last time I was down south (about 10 years ago), Didn't bother to take a look at the Puma, didn't have the time.