That was because he found quite a few surprising things about this cave. Like for example the fact that while his ladies were changing their clothes, there were a few guards coming towards them.
Or it would be more exact to say that a few soldiers were coming their way, and it wasn't from outside but from inside.
Which meant that this cave was bigger and deeper than it looked on the outside, but not only that. Looking by the number of the guards they weren't just doing a rip-off job of guarding.
There were 10 soldiers coming towards the entrance of the cave behind the waterfall, as each and every one of them was fully armed.
In fact, this place seemed a bit inconspicuous, and the cave was extremely small and dark for Roy and his ladies to notice the situation there.
Perhaps, if it weren't for Roy already activating his area sense, and the loud noises of these guards while they were on duty, Roy might have never been able to discover it.
