This edition of Eksplorium features five (5) research articles from various scientific fields. The first paper, titled “Characteristics and Genesis of Mount Pengki: A Scoria Cone of Dago Volcano, West Java, Indonesia,” explores the genetic characteristics of the Scoria Cone at Dago Volcano in West Java. The second article, “Evaluating the Effectiveness of Radon Measurement Techniques in Soil Gas: Impact of Hole Depth and Measurement Time,” examines how hole depth and measurement duration affect radon detection accuracy. The third paper, “Hydrogeology and Groundwater Potential in the Sirimau District, Ambon City, Maluku Province,” discusses the groundwater potential in the Maluku region. The fourth article, “Identification of Basalt Rock Distribution Using Resistivity Geoelectric Method in the National Capital City (IKN), Paser, East Kalimantan,” investigates the distribution of basaltic rock in Indonesia’s future capital. The final paper, “Facies and Depositional Environment Analysis of Limestone in Citeureup Area, West Java, Indonesia,” presents sedimentological insights into the Klapanunggal Formation and a scientific basis for informed resource evaluation and sustainable exploitation strategies in similar carbonate settings.