Cardin looked at the map after he brought all his members to the back of the mountain. He knew the entrance was on the back, but he couldn't find the boulder that the dwarf mentioned. He sent hundreds of Players to search for it and hoped they would find it.
After waiting for an hour, there was no progress on finding the entrance, making Cardin a bit pissed. The truth was the boulder had been disposed of by the dwarves, and the entrance had been covered with rocks and lahars to make the hole disappear without leaving a trace and look natural from the outside.
"We found the boulder," The man who killed the dwarf informed Cardin. "It's all the way down there, and it seems they got rid of it and covered the entrance so we can't find it," he pointed out.