Before long, Aito's team arrived at a dead end. Fresh red, as well as green blood, covered the ground. Broken arrows, daggers, swords, and a few body parts were scattered around.
Those were probably Meilin's teammate's remains. In dire need of TP, they had thought of braving the tunnels. However, they only got lost in them for hours. It appeared that the tunnels actually spanned over kilometers, maybe over the whole floor.
The normal entrance wasn't located near the mountain. In fact, there were many entrances throughout the forest that seem to be caves or small holes. Aito and the siblings had passed by a few of them on their way to the mountain.
The possibility of goblins using those to navigate safely underground then exit to ambush challengers on the surface was high.
If they hadn't taken the hidden entrance, Aito's team would have probably been lost in the myriads of tunnels like Meilin's team. Well, they also had Gwen's blurry memories.