To the southeast of the royal tomb, is a small monument that has been erected among the pine trees; next to the monument is a well called Najeong. According to Samguksagi (Historical records of the Three Kingdoms) and Samgungnyusa (Memorabilia from the Three Dynasties), Park Hyeokgeose, the founding monarch of Silla, was born by this well. In 69 BC, Sobeolgong, the head of Goheochon Village, saw a white horse on its knees by the well. When he approached the well he found that the horse had magically disappeared and that a large egg was left in its place, from which a boy was born. When the boy turned 13 years old (57 BC), he was appointed king by the village chiefs and began to rule the area then called ‘Seorabeol’. A memorial stone (2.25 meters high, 45 centimeters long, and 21 centimeters wide) was erected in 1803 in the third year of King Sunjo's rule (Joseon Dynasty) detailing the historical origins of the founding father of Silla.