Danyang Sainam Rock is located amidst the clear blue waters of Namjocheon Stream (Ungyecheon Stream). Despite being granite, the rock is colorful in brown, green, and gray, and is split horizontally and vertically (vertical and horizontal joints), giving it a very rare appearance. Some say it is reminiscent of the work of Dutch artist Piet Mondrian.
Because of these joints, it's easy to see where the rock has fallen apart, especially at the bottom, where it's brown in color.
※ Due to the high risk of falling rocks, the lower part of the Sainam Rock is strictly off-limits..
Yeokdong U tak*, a scholar of the late Goryeo Dynasty, was from Danyang and often visited this place. In honor of this, during the Joseon Dynasty, the governor of Danyang, Im Jae-Kwang, named it 'Sainam' after Yeokdong U tak's fourth-level position in the government.
* Yeokdong U tak(1262-1342), the first writer of Sijo (Korean poetry) in Hangul, wrote the poem "Tanroga," lamenting his getting old, and once made a jibusangso (an appeal with an axe) to King Chungseon of Goryeo.

