East Java people residing in the East Java, making it Indonesia's second-most-populous province; the latest official estimate (for January 2014) is 41,529,481. It has a land border only with the province of Central Java to the west; the Java Sea and the Indian Ocean border its northern and southern coasts, respectively, while the narrow Bali Strait to the east separates Java from Bali. The Dinoyo inscriptions found near the city of Malang are the oldest written sources in East Java, dating from 760 CE. They tell of many political and cultural events in the Kingdom of Dinoyo. The name of Malang is
Mariana Trench during the "Challenger" expedition in 1875, using a weighted rope, which recorded a depth of . In 1877, a map was published called "Tiefenkarte des Grossen Ozeans" ("Deep map of the Great Ocean") by Petermann, which showed a "Challenger Tief" ("Challenger deep") at the location of that sounding. In 1899, USS Nero, a converted collier, recorded a depth of . In 1951, "Challenger II" surveyed the trench using echo sounding, a much more precise and vastly easier way to measure depth than the sounding equipment and drag lines used in the original expedition. During this survey, the deepest part of