The game has been receiving critical acclaim recently, and one thing worth noting is a look at the underground heights of The Legend of Zelda: Kingdom Tears. If you are confused about this issue, you may wish to refer to this detailed guide, I believe you will gain something.
Answer: You can use the Babel Technique to reach some special areas.
In the underground world, players often encounter some very tall, altar-like pillars, with the lower part suspended in the air.
This is actually a scene where the Babel Technique can be used. As long as players stand in the center of the pillar and use the Babel Technique, they can lead to certain special landmarks on the ground.
For example, Team Yigai's base and the middle of the Yahaha Forest can be directly accessed from the tall pillars in the underground world.