I'm Confused...

So, i keep hearing about a location called Freezing/Frozen Heights which is apparently the last grinding spot. I hadn't managed to find it's coordinates until i saw Skrype's grinding spot guide... (https://forums.wynncraft.com/threads/levels-1-101-grinding-guide-gameplay-update.158675/)
which has made me even more confused as when i enter the coordinates in the map, it centers on Molten Heights.
(https://map.wynncraft.com/#/1474/64/-5428/-1/0/0)
So is there anyone willing to enlighten me?

 

It's underground

 

oh... i'm an idiot then xD

 

Without actually going there it can be quite confusing! It's part of the molten heights, but it's frozen and contains a lot of snow/ice themed mobs that spawn quite frequently, making it a nice farming spot for Level 80~90+