I hope this is not a repost, i searched for deathgrip and nothing came up.
Anyway.
We all know the Tunnel in WSG and the small house/gate in front. Normally if you stand on it you can be deathgripped down by those anoying DK's, but if you stand where I stand on the screenshot you become immune.
i tested it with 3 DK's around me and eventually they started spamming Icy Touch, but I couldn't be DG'd down
The whole lower roof makes you immune to DG