Kazi allowed No. 28 to show him the way in. He already suspected that it was connected to the seal that would let him not to be affected by the formation if it was activated, but there was no pain in being cautious.
To his surprise, the boulder itself was an illusion that was created using power from the stone. Kazi was more than intrigued now, it was even able to fool his senses into thinking it was actually a boulder, meanwhile, it was just a boulder shaped entrance that looked extra smooth and had no external roughness of hard rock.
Kazi didn't enter immediately. For an old head such as Zi, Kazi couldn't risk his technique being exposed, he already had a counter measure for that, though.
First off, he used the 'earth trap door' technique to create a small space underground, then he asked no.28 to go in before he followed behind.
Before going in, he asked the rest to keep watch out of formality, not that they could even see anything.
