Royal Initial Stones (ศิลาสลักพระปรมาภิไธย) There is an area where the royal initials of King Rama V were inscribed onto a stone to mark his royal visit. There are also inscriptions of Their Majesties King Bhumibol Adulyadej and Queen Sirikit’s as well as Her Royal Highness Princess Maha Chakri Sirindhorn’s initials on their royal visit.