Vietnam's beloved "Kissing Rocks," a pair of towering rock formations nestled within the picturesque Ha Long Bay of Quang Ninh province, are facing an unprecedented threat of collapse due to a combination of geological processes and rising sea levels. About the Kissing Rocks: Ha Long Bay, a UNESCO World Heritage Site spanning an area of approximately 600 square miles, attracts both local and international tourists. An iconic feature of the bay is the Kissing Rocks, which are also affectionately referred to as Hon Trong Mai.