The World Heritage Committee,
- Having examined Documents WHC/18/42.COM/8B.Add and WHC/18/42.COM/INF.8B2.Add,
- Recalling Decision 31 COM 8B.12 adopted at its 31st session (Christchurch, 2007),
- Approves the proposed minor boundary modification for the Jeju Volcanic Island and Lava Tubes, Republic of Korea, namely to add the new Upper Geomunoreum Lava Tube System component parts to the property;
- Does not approve the addition of the other three proposed component parts as a minor boundary modification to the Jeju Volcanic Island and Lava Tubes, Republic of Korea, namely Suwolbong Tuff Ring, Chagwido Tuff Cone Complex and Socheongul Lava Tube, and recommends the State Party to resubmit a significant boundary modification for these three component parts, with revisions to clarify the boundaries of the nominated components and their buffer zones, in order that a full evaluation of these proposals can be undertaken by IUCN;
- Requests the State Party to provide to the World Heritage Centre, by 1 December 2018, a new large scale map of the whole of the Geomunoreum component as modified, including all of the relevant component parts, and the buffer zone, and also to provide separate measurements for the area of each of the component parts, as well as their buffer zone.