What is killing me?

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.

Here is a video:

  • Do I need to play previous Witchers before Witcher3
  • Quest 'Get Junior': Where do I find the documents?
  • Why can't I meditate?
  • Missing Swallow and Full Moon potion diagrams
  • To whom should I return my trophies
  • How do I meditate?
  • 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.

    We love Playing Games, especially Video Games.