Sean Knight stepped out of the crevice and immediately threw a hand grenade into it before quickly leaving the place with Cheryl Suweton.
A muffled bang erupted, and a large cloud of smoke billowed from the crevice, followed by falling chunks of stone.
The rock was inherently limestone, and its structure wasn't tight, so even a small explosion was enough to block the crevice.
Continuing upward, Sean threw hand grenades at several key places, causing a thunderous noise that echoed through the cave interior.
When the five of them exited the cave, Sean threw another grenade into the cave, but this time, he threw two.
"Boom! Boom!"
The hand grenades exploded one after the other, and huge chunks of Mountain stone fell, completely blocking the cave entrance.
It was only then that Cheryl finally caught her breath, sitting down on the ground and panting heavily.
"It's okay now, it's okay," Sean said as he patted her back, channeling spiritual energy into her and comforting her.