Mountain Glenn

Mountain Glenn was the Kingdom of Vale's first serious attempt at expansion. The kingdom developed an elaborate underground metro system that allowed the settlers to commute to and from the main kingdom and the new territory, thus bypassing the danger of the Grimm, while also setting up an aggressive perimeter defense that worked for a short period of time, keeping the thousands of the city's residents safe in their new home.

However, Mountain Glenn did not boast the natural barriers Vale did, and as such Grimm attacks began to increase every day until inevitably they overwhelmed the city's defenses. These ever increasing attacks were partly due to the actions of Merlot Industries which worked to attract more Grimm for the purpose of experimentation.

In a last-ditch effort to stave off destruction, the citizens of Mountain Glenn took refuge in the tunnels they had initially cleared for their subways, converting them into an underground settlement and cutting themselves off from the surface entirely.

Unfortunately, this supposed safe haven was eventually compromised when an explosion opened the mouth of another cavern filled with subterranean Grimm. This left the town completely exposed and the remaining citizens beyond saving. With no other recourse, Vale sealed off the tunnels permanently, creating the world's largest tomb. The ruins of Mountain Glenn now stand as a reminder for history to reflect upon.