Hallim Park is huge! A morning itinerary is plenty of time to explore. After booking tickets on Klook, you can scan the QR code at the ticket counter, and once the staff gives you a receipt, you can enter. There are several large areas to visit. The Jaeam Folk Village shows what living conditions were like in ancient times. Since Manjanggul Cave was under renovation and not yet open, we went here instead. The main attractions to see are Hyeopjaegul Cave and Ssangyonggul Cave, which are truly spectacular! However, it's not brightly lit inside, so you need to be careful when walking.