1965.	Cultural properties land surface investigation (National museum)

	April 11, 1981	Designation of Jolla Buk-Do monument No.49 (Area: 1,272㎡)
	October~December 1983.	Land surface investigation of Gochang cultural properties (Jeonbuk University museum)

	October~December 1990	Land surface investigation of dolmen tomb group of Juklim-Ri region, Gochang (Wongwang University Mahan Baekje culture research center)
	May 21~ July 20, 1991	Excavation investigation of dolmen tomb group of Juklim-Ri, Gochang (Wongwang University Mahan Baekje culture research center)
	December 21, 1994	Cultural properties designation of historic relics No.391 (Area: 81,763㎡, 442 dolmen)
	April 29, 1998	Decided to register on temporary list of the world cultural heritage. (Cultural Properties Administration)
	December 1998	Opened international academic seminar for protection and management of dolmen relics. (Gochang County)
	May 1999	Land surface investigation of stone table exploitation region in Gochang County (Jeonju University History & culture research center)
	November 15, 1999	Designation of cultural properties protection zone (The first)
	November 15,1999	Designation of additional cultural properties (Dosan-Ri) of historic relics No.391 (Area: 1,272㎡, 5 dolmen) * Total designation area: 83,035㎡, 447 dolmen
	December 1999	Comprehensive investigation/research on Korean dolmen relics (Cultural Properties Administration, Seoul National University museum)

	April ~ July 2000	Land surface investigation of dolmen relics region in Gochang (Honam culture research institute)
	2000	Cultural relics excavation investigation within the construction section of the West Coast Highway. (Gunsan~Gochang) (Wongwang University Mahan Baekje culture research center)
	December 2, 2000	World cultural heritage registration (No. C-977) of dolmen relics in Gochang -447 dolmen
	September 25, 2001	Additional designation of cultural properties protection zone (The second)
	October 30, 2002	Additional designation of cultural properties protection zone (The third)
	April 28, 2003	Additional designation of cultural properties protection zone (The fourth)
	2003. 7. 29	Adjustment and additional change designation of cultural properties protection zone (The fifth) * Total protection zone : 566 lots 968,385㎡
	December 31, 2004	Ground-breaking of dolmen park construction project
	April 9, 2005	Disaster dolmen excavation investigation (Wongwang University museum)
	December 30, 2005	Dedication of relocation complex construction project for dolmen park (22 households)
	March 13~ June 11, 2007	Numeric topographical map manufacturing service contract of Dolmen relics region
	May 4 ~ December 7, 2007	Maintenance feasibility investigation and basic drawing service contract of Dolmen relics region
	May 6 ~ August 3, 2008	Maintenance project implementation service contract of Dolmen relics region
	July 31, 2008	Dedication of dolmen park construction project
	September 24, 2008	Opened dolmen museum