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On 2 January 2018, the local government proposed Silokek, a region in the Sijunjung Regency, West Sumatra Province, Indonesia, as a geopark, based on district rule number 188.45/3/KPTS-BPT-2018. This arrangement was based on the idea that a geopark would provide tourist destinations with natural tourism and archaeological, environmental, historical, educational, and cultural components in addition to geology, making this place an indirect example of a complex tourist destination. The Ngalau Basurek Cave is a geosite in this area that is a well-liked tourist destination, although it does not yet have a useful and instructive cave morphometry map. Producing cave morphometric data using the compass and step mapping method and geomorphological analyses of Landsat 8 image data is suggested to identify patterns of relationships with surface karst morphological features. A northeast dip angle trend was visible in the fresh limestone of the Kuantan Formation, which formed cave features as a result of dissolution. The dolinas, uvalas, and cone–kart features, which are represented on topographic maps (DEM-SRTM), demonstrate comparable trends. Dip-angle and strike-line trends were used to obtain a complete relationship between cave morphometry and surface geomorphology in Silokek Geopark.

The study successfully established a relationship between cave morphometry and surface geomorphology in the Silokek Geopark.The findings reveal a consistent directional trend between the caves internal structure and the surrounding karst landscape features, indicating a shared geological control.Furthermore, the analysis of dimension ratios between underground caverns and surface depressions highlights the significant impact of dissolution processes on cave formation.These insights contribute to a deeper understanding of the geological evolution of the area and provide valuable information for land management and environmental conservation.

Future research should investigate the impact of subsurface hydrological systems on the formation of karst features in Silokek Geopark, potentially utilizing tracer studies or groundwater modeling to understand flow paths and dissolution rates. Additionally, a detailed analysis of the structural controls influencing cave development, such as fault lines and bedding planes, could provide insights into the long-term evolution of the karst landscape. Finally, exploring the potential for integrating remote sensing data, including LiDAR and hyperspectral imagery, with traditional mapping techniques could enhance the accuracy and efficiency of geosite characterization and monitoring, ultimately supporting sustainable geotourism and geoconservation efforts within the geopark. These investigations, building upon the current study, will contribute to a more comprehensive understanding of the complex interplay between geological processes and landscape evolution in this unique karst region, providing valuable data for informed decision-making and long-term preservation.

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