Rholdar is a domed underwater settlement on the planet Bolarus IX, located in the northern hemisphere's Lirathanan Ocean, off the northern coast of the Bol'ki continent. (Decipher RPG module: Worlds)

the planet Bolarus IX
cities and settlements	Arinol • Bokitu • Bolkinua • Bol'Kt • Bolsetu • Bor'Kehr • Res'lar • Rholdar • Tragon • Viral
landmarks and institutions	Bank of Bolias • Quorum of Bole
nation-states and provinces	Alnat Province
geography	Bolkintu Mountains • Cliffs of Bole • Elivos • Izos • Kasiron • Linmos • Rabinu • Rabor Archipelago • Rasara • Rasnih Mountains • Rovim Mountains • V'olos
bodies of water	Bay of Bolse • Bolse Sea • Kisaran Ocean • Lirathanan Ocean • Lolsara Ocean • Senden Funnel