Guild Wars 2 - Highest Successful Dive

One of the achievement categories in Guild Wars 2 (GW2) is diving. There are diving goggles which the player puts on and proceeds to dive into a body of water.

Naturally, one wonders how high can one go. So what I did was create a stair case to the “roof of the world”. One can not go any higher than what I was able to create. If one tries, the player will bang their head and there is a chance one could be teleported back to the ground. Not something I wish to experience more than once.

This is not officially a dive as one can not have diving goggles in a Guild Hall. But the effect is the same.
There is a corollary video where I miss the water - found here:
https://rumble.com/vzm071-guild-wars-2-highest-unsuccessful-dive.html