This is a plan to access Miyako Island's famous limestone cave called "Pumpkin Hole" by canoe and explore it with your whole body! It is called "Ryugu Castle" by the locals. The interior of the cave, where pumpkin-shaped stalactites are nestled, is impressive yet somewhat mysterious. You can enjoy the cave by climbing up and down, and there is even a diving spot! Enjoy exploring to your heart's content! Beginners are welcome! Even if it's your first time, the guide will provide solid support, so you can enjoy it with confidence. Depending on the tide level, the opening time varies from morning to afternoon depending on the day. note that. Only Japanese or English is available. 【Notes】 ・Meeting and dissolution times may vary depending on the season and field conditions on the day. The shop will contact you the day before the tour to inform you of the meeting place and time. If you do not hear from the shop by the evening of the previous day, please send an email to info@miyako-pipi.com or call 0980-79-5990 (Miyakojima ADVENTURE PiPi). ・The tour will be held rain or shine. However, if it is determined that the safety of the field cannot be ensured, the tour may be canceled. ・Please change into clothes that you don't mind getting wet before gathering. ・Please wash your hands before participating. (There are no restrooms nearby) ・Participants who have been drinking alcohol will not be accepted. ・If you will be late, please be sure to contact us in advance. ・Customers who are pregnant cannot be accommodated. ・Target age is 7 to 59 years old. ・Customers weighing over 100kg cannot be accommodated. ・If the tide level is 90cm or higher, the event time may be changed. ・Photos posted are from the past, and currently only the entrance can be photographed inside the limestone cave.