The power of mana

A lot of the shadow continent was covered in a thick blanket of snow due to how far north it was. It was a mountainous terrain which also had rivers flowing in the valleys.

The rivers were more often than not rivers of boiling lava, which would melt the surrounding snow so that  the dark black ground underneath was visible and could be seen slowly being infected by the shadow.

It was a strange sight to behold but what was most impressive of all, was the grand fortress named Tenebris. Tenebris fortress was the largest and head fortress where the ones behind the Shadow resided. 

From behind the lava rivers flowed into the fortress, making a large pool of lava. From above, clouds of shadow seemed to constantly float towards the fortress, seeping through the walls to an unknown destination. This was the shadow from the land and those that were infected.