I was travelling a corner of Novigrad seeking a new location on the map, where I reached a weird tree, and any time I got close to it I simply dropped dead. From full health of 6000+ vitality to 0 instantly. No fall. No monsters. No fight. Just walking.
Screenshot from the video:
Here is picture of the location on the map:
And in the world's map:
Is this a bug, if so is there a way to bypass it? I tried about 5 times from different locations before giving up, as each time means long minutes of loading.