Dragon Howl Valley is a basin surrounded by steep mountains, connected to the outside world by only a narrow passage.
The name "Dragon Howl" doesn't actually have anything to do with dragons. It's because whenever strong winds from outside funnel through the narrow entrance, they create a piercing howl resembling the roar of a giant dragon, thus the name.
Perhaps due to this unique terrain, the magic power within the valley is exceptionally thin, causing spells to be significantly less effective, with their power reduced to less than half of what they would be outside.
This makes the valley easy to defend and difficult to attack; whether attacking from outside or breaking out from within, both are extremely challenging.
However, for the same reason, it can also be easily sealed off by external forces and is not an ideal place to hold out.
Alama's reason for retreating here was simple: there were no better choices.
