Wat Maha Phuttharam, Si Sa Ket Province
Located in the heart of Si Sa Ket City, Wat Maha Phuttharam's viharn houses ‘Luang Pho To’ the sacred icon of Si Sa Ket. The gigantic Buddha image in attitude of subduing Mara is 6.85 metres high and 3.50 metres wide. Built during the Khmer era over a thousand years ago, the statue was originally carved from stone and decorated later at an unknown time.

Source: https://www.lovethailand.org/travel/en/51-Si-Sa-Ket/3375-Wat-Maha-Phuttharam.html