https://www.geotemx.com/post/geophysical-survey-reveals-a-42-meter-deep-hole-at-the-deepest-point-of-the-mekong-river-bueng-kan 2026-06-29 https://static.wixstatic.com/media/c0eac7_4bf5577704ab4fe081b49bfa89e5f2b9~mv2.jpg https://www.geotemx.com/post/geophysical-survey-for-shallow-groundwater-assessment-in-the-thung-kula-rong-hai-region 2026-06-29 https://static.wixstatic.com/media/c0eac7_d7bbcbc22503410281bc36fa785875dc~mv2.jpg