Large enough for a few armies. If htey hit a boundary, they get brought back to the teleporter. Already her mind was working with that. If ever there was a bad situation and they were too far from the teleporter, maybe they can run away from it, hit a boundary, and make it back here. It was something to test out in the future. Something that could be a game changing tactic that could save their lives. She'd have to think on that later.

For now she took it all in carefully, rolling from heel to toe a moment. What she is hearing now though, makes her wonder if they should try to down play their skills a bit at first. If they are testing them, do they want to set the bar low to throw them off? Or will it really come down to being tested hard. No, she'd expect it to be hard.

She glanced to Trunks first at the combat idea, then to the master again, head tilting. "I can't talk for both of us, but I wouldn't say no if there were combatants out there while we explore? I'm not a fan of senseless deaths however, but if there are ways to train against something thinking, I'm up for it?" She said, and glanced to the other to see what he thought. "Unless you would rather explore first and get the lay of the land, but if it's going to change anyhow, that might not matter?"