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Tianliao's "Lunar World" special landscape, geologically known as a "badland," arises from the crust's "rejuvenation," where relentless erosion from years of rainfall and river torrents deposits silt onto marl. After crustal movements, this silt further mixes with marl, undergoing weathering and sedimentation to form the present-day topography, which sustains only drought-tolerant, saline-resistant shallow-rooted plants (e.g., bamboo species) and coastal vegetation. Along the Tainan to Qishan route via Provincial Highway 28, in addition to the Lunar World scenery, there are over twenty small and large mud volcanoes that intermittently erupt, with eruption magnitudes determined by subterranean accumulation pressures of natural gas and slurry. After eruptions, the mud flows deposit areas, later eroded by rainfall into unique micro-landforms. Among them, Dagunshui and Xiaogunshui provide the most convenient vantage points for observing mud volcanoes. Mud volcanoes are "false" volcanic features where subterranean natural gas and slurry eject along shallow rock fractures due to pressure, classifying as a type of badland terrain. Tianliao is the region in Taiwan where badlands and mud volcanoes are the most developed. The ancient Tingting Formation's marl badlands, characterized by desolate desert beauty, resemble an untouched geological classroom with distinctive ecological products and gourmet cuisine. In October 2021, Kaohsiung City's Tourism Bureau hosted hot air balloon events at Ahe River and Tianliao's Lunar World, attracting widespread audience response and drawing visitors from across the nation. This let people virtually satisfy their travel cravings with aerial experiences and enjoy Kaohsiung's beauty. The area's unique marl terrain rivals the beauty of Cappadocia in Turkey. This marked the first local tethered hot air balloon experience in the area, with breathtaking photos sparking high online interest.