Temple of the Four Gems

In this map there is my first try to draw a snowy environment, in addition to the snow I wanted to give a cold tone to the rock too, I hope you like the result.

The protagonist of this map, however, is the temple inside the mountain, a temple that holds 4 powerful gems capable of generating an enormous amount of energy.
Their purpose? Well, I leave everything to your imagination!
After the gems room, a large door opens onto an external platform, how to set a final encounter.

I am also studying which are the best lights to put on a map, so I made two different versions, I'd like to know what you think: better with realistic lights or dimmed lights?