Eva had mentioned that her father entered the Underground Palace through another entrance, so we could assume that there was more than one way in and out. But ditching Katherine wouldn't be easy. She was smart and alert, so we needed to be fully prepared.
"Let's go this way," Eva continued to lead the way. Soon, we passed through several stone rooms. In the silent underground, we suddenly heard the loud sound of flowing water.
After passing through a stone door, we found ourselves beside a gently flowing underground river. It stretched across our path, blocking our way. The river was about thirty feet wide and seemed very deep. To cross it, we'd have to swim.
Swimming in such a cold winter was not a pleasant task. However, Katherine seemed prepared. She took out wetsuits from her
