The most remarkable phenomenon, which is observed at the Lamongan, which apart from it, in whole Jawa is never seen at no single volcano, is the amount of small lakes which are situated on several distances from each other, but are surrounding the cone volcano in a line following each other in a wide circle.
Among the number of active volcanes of Jawa this is the lowest and smallest in dimension. Seen from the western shore of the lake (ranu) Lamongan or Glagah, his right summit, which his a cone-shaped form is visible under a view angle of 9'54', and his sharp angular left summit under an angle of 7' 22' above the horizon.
With regard to the earliest times to histories report have received. From the fluent as well an from the positions of both canes follows, that the Malkan or consent said, the mount.
Fast in der Mitte von sava, zwischen dem 7. und B. Grade südlicher Breite, erheben sich in gleichen Meridian, 110 und einen halben Grad östlich von Greenwich, die Zwillingsberge Merapi und Herbabu, die durch einen hohen Zwischenrucken mit einander verbunden aind.ch
Explosions around the Tanbora were heard which had an elliptical shape, included whole Java, Sulawesi, Ternate, all East Javanest island, including the Moluca's till Irian Jaya, the greatest part of Kalimantan, the Southern part of Sumatra, the north western part of australia.