"A dolmen (/ˈdɒlmɛn/) is a type of single-chamber megalithic tomb, usually consisting of two or more vertical megaliths supporting a large flat horizontal capstone or "table". Most date from the early Neolithic (4000–3000 BC) and were sometimes covered with earth or smaller stones to form a tumulus. Small pad-stones may be wedged between the cap and supporting stones to achieve a level appearance. In many instances, the covering has weathered away, leaving only the stone "skeleton" of the mound intact.
The Korean Peninsula is home to the world´s highest concentration of dolmens, including "cemeteries" consisting of 30-100 examples located in close proximity to each other; with over 35,000 dolmens, Korea alone (for as-yet unknown reasons) accounts for approximately 40% of the global total." - (en.wikipedia.org 14.01.2022)
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