Mount Tenmon (天門山 Tenmon-san; also known as Mount of the Celestial Gate) is the highest mountain in Surea. Along with Mount Senryon (仙靈山 Senryon-san) and Mount Sotai (雪台山 Sōtaizan), it is one of Surea's "Three Secret Mountains" (三聖山 Sanseizan). Mount Tenmon and surrounding moutains belong to Josanada Alps, which is part of Josanada National Park in Surea. The highest point of the range, Mount Tenmon, is 3,893 metres (12,772 ft) above sea level. Mount Tenmon was once in the ocean and raised to the current height when the Eurasian Plate slid under the neighboring Philippine Sea Plate.