“Alas Purwo As the Heart of Culture and Tourist Attraction of Indonesia”. SINGOSARI: Jurnal Perkumpulan Prodi Pendidikan Sejarah Se-Indonesia (P3SI) Wilayah Jawa Timur, vol. 3, no. 1, May 2026, pp. 1-10, https://doi.org/10.63440/singosari.v3i1.90.