Abstrak:Penelitian naturalistik ini bertujuan untuk memahami tingkat pemahaman penambang tentang negative impacts eksploitasi galian Golongan C di Desa Karang Sidemen, mencakup pemahaman penambang tentang (1) galian golongan C; (2) aturan eksploitasi galian golongan C; (3) negative impacts galian golongan C bagi lingkungan sekitar dan (4) manfaat eksploitasi. Data penelitian diperoleh dari observasi, wawancara mendalam dan pencatatan dokumen yang dianalisis secara melalui tahapan collecting data, display data dan verification. Hasil penelitian menunjukkan bahwa pemahaman penambang terhadap konsep bahan galian Golongan C dan aturan pertambangan sangat rendah, tetapi tingkat pengetahuan penambang terhadap negative impacts eksploitasi galian Golongan C cukup baik. Hanya saja penambang mengabaikan hal tersebut karena aktivitas pertambangan dapat memberikan pendapatan memadai secara mudah untuk memenuhi kebutuhan hidup. Manfaat yang dapat diperoleh dari penambangan bersifat tangible benefit (diukur dengan materi) dan intangible benefit (capaian non-materi). Guna memaksimalkan aktivitas penambangan hendaknya dilakukan pengawasan dan pembinaan secara intens, menertibkan izin dan wilayah usaha pertambangan, melakukan pengelolaan dan pemanfaatan ruang secara optimal dan terencana serta melakukan reklamaasi lahan pascapenambangan. Abstract: This naturalistic research aims to understand the level of understanding of miners about the negative impacts of exploitation of Group C excavation in Karang Sidemen Village, including miners' understanding of (1) group C excavation; (2) the rules for exploitation of class C excavation; (3) the negative impacts of class C excavation for the surrounding environment, and (4) the benefits of exploitation. The research data was obtained from observation, in-depth interviews and document recording which were analyzed through the stages of data collection, data display, and verification. The results showed that miners' understanding of the concept of Group C minerals and mining regulations was very low, but the level of miners' knowledge of the negative impacts of Group C excavation was quite good. It's just that miners do this because mining activities can provide adequate income to meet their daily needs. The benefits that can be obtained from mining, are tangible benefits (measured by material) and intangible benefits (non-material achievements). In order to maximize the activities carried out to carry out intensive supervision and guidance, regulate permits and mining business areas, carry out optimal and planned management and use of space, and carry out post-mining land reclamation.