Really nice job on this, Bogie! I love the long vertical format. I've noticed that many of your other large, multi-room maps usually have different types of floor tiles for the various rooms (which I normally like very much), but in this case I think going with the same one for all the rooms (with the exception of the cave, of course!) was a good choice. It gives the whole thing a very nice flow-through (hope I'm explaining that right! ), especially for this type of layout.

And the border is a nice addition! I'm just not too sure about the colours... It seems a bit overpowering and distracting, IMO. Maybe try using some colours that would compliment the colour of the rock background?

Love the dragon hidden under the treasure! I get map ideas all the time when I'm watching fantasy movies! And then I run to grab my tablet and jot them down, so I don't forget.