Acondia is Geologically young. The oldest bedrock dates at about 3.1 million years. Acondia is built almost exclusively of volcanic rocks, predominantly basalts. Silicates and intermediate rocks constitute about 10% of the island, while sedimentary deposits account for another 10%.
The eastern-most mountain range, The Kapua-Maunga mountians (Kapua means Misty or Foggy), stretch between the volcanic rift zone and abruptly end in cliffs at the Pacific ocean. These volcanic cliffs extend the entire length of the island, making all approaches by sea along the eastern coast impossible. Hot Springs and underwater volcanic activity cause frequent, thick fog to blanket the eastern coast of Acondia. This dense fog hampered early Spanish explorers, causing them to wreck their vessals on the rocky east coast or miss Acondia altogether.
West of the volcanic rift valley lie the Ahi-Maunga mountians (Ahi means Fire). The early Polineasian inhabitants of Acondia gave this mountain range it's name because from the perspective from their western settlments, these mountains were frequently illuminated by the occasional volcanic activity in the central rift zone.
The volcanic rift zone is a great valley containing numerious fissures marking the boundry between the Pacific plate and the Antarctic plate. The geography of the rift valley is always changing as fissures erupt and and are quickly covered with layers of volcanic bassalt and new fissures appear. The rift valley is spreading at the rate of about 1/2-inches per year. As the valley grows wider, new volcanic material is added to the surrounding mountain ranges.
SOUTH: The major feature of southern Acondia is the vast Belmar Bay. Belmar Bay was formed by the intersection of the Challenger fracture zone with the mid-Pacific ridge in south-eastern Acondia. As deep volcanic procesesses lifted the fracture zone above sea level, a huge penninsula was formed south of the bay, and steep highlands were raised north of the bay. The sediments contained in the highlands possess vast fresh water holding capacity. This causes numerious fresh water streams and waterfalls along the southern edge of the highlands down into Belmar Bay. Southern penninsula name = pakía (seal) river?
WEST: Western highlands & the northeastern plains, castle island? river?
NORTH: Northeastern plains and the sandy islands.