Sure enough, it was clear from the large indentations in the moss that the boulders had once been strewn around the area but had recently been gathered into a large pile. It towered over Rooper's head, at least twice her height, and seemed to lean against the base of a ruined building.
Silandra was standing on one of the boulders, peering at something within the gaps in the uneven stones. "I thought so." She dusted her hands and hopped back down to Rooper's side.
"What is it?" asked Rooper.
"There's a doorway or opening of some kind behind here," said Silandra, jabbing her thumb in the direction of the boulders. "Someone's built a barricade." She tugged on her earlobe thoughtfully. "Or a prison."
"Someone built this?" said Rooper.
"But how could they move all these massive stones? Without the right equipm-" She stopped abruptly as the answer dawned on
her. "Ahh."
The Force. Someone had used the Force.
"But that's good, isn't it?" she said.
"We won't know until we open it,” said Silandra.
"Give me a hand?"
Rooper nodded.
Together, the two Jedi extended their arms. Rooper closed her eyes, reaching out with her senses. She saw the heaped stones like anchors in the swirling colors of the Force, obstacles stopping its natural flow. And so she willed them to move.
At first, they didn't budge.
Beside Rooper, Silandra grunted. Rooper pushed harder, lending more and more pressure, more strength.
And then the stones were shifting, grating against one another as three of them peeled away from the others, rolling down the sloped heap like misshapen balls and coming to a stop among the mossy rocks below.

Star Wars The High Republic Quest For The Hidden City Chapter 19 Page 171