"Shit!" Diana instinctively ducked, shielding her face with her arms. The only reason she didn’t bolt was that she knew it was Ian's spell.0

Swoosh—0

Just as she had expected, the flying debris missed Ian and everyone standing a few steps behind him. The rocks curved in midair, veering sideways as if sliding along invisible rails.0

Crash, crackle!0

Instead, the debris converged a few meters behind Diana, slamming together with a loud, grinding impact. Turning, Diana watched the rocks collide one after another, the crashing sounds echoing through the space.0

The rocks varied in size and shape, yet none shattered or bounced away. They clung together as if bound by an unseen force, stacking tightly as they landed.0

Thud... Crunch—0

A cloud of dust rose from the heavy impacts as stones kept flying past the group. They struck and locked together with a steady rhythm. In an instant, large and small rocks encircled them, spaced just a few meters apart. Above, the debris curved inward in a rough arc, forming what looked like an artificial cave entrance.0

"Rock Fortress…!" Diana softly exclaimed.0

It was the name of the mid-tier...0