Tao Sipinggan, described in a 1985 paper, the site was at elevation 1445 m, was dated at 12,116 ± 140 years BP at the depth of 12 m. It is also close to Lintong Nihuta.
Tao Sipinggan is another extinct crater located on the plateau and has steep sides, but some level (or leveled) land surrounds the lake. The core analyzed was extracted through a floating mat at the south end of the site and consisted largely of organic material as a swamp forest seemed to have been present at the lake margin in the past, but fields were later constructed when this was removed. The upper part of the sublake surface stratigraphy contains Toba tuff.