TN-BTS (Bromo Tengger Semeru National Park) area is awell known natural tourism objects and one of tourism destination places. Both for domestic and foreign tourists.
The mayor atractivenees of TN-BTS is its unique and spectacular natural phenomena and those are easily enjoyed from a relative cloose positition. Tengger caldera (crater) in which 5 (five) mounts are located could be a special interesting thing in the tourism, including its history of formation. According to esher (1980 et al) formerly mount Tengger was a very big /large mountain whit a peak level of 4,00 meters above sea level. About one milion or one milion and a half years ago have head activities to from a very large caldera of 8-10 Km mount Tengger activities does not stop only to that , but its activities is still seen whit emergence of a new crater at center of the caldera the crater is higher nad higher until sometime it erupst.
Tengger Caldera is very large and well known whit is name Laut Pasir Tengger. Because of its unique this caldera was handled by the goverment in 1919 and stated as a natural conservation. However this area apparently attracted tourist to come. Then the area was changed to be as a national park (especialy in Cemorolawang part.)
The lava crater is at a sand sea of kutho part, from far looks like a pile of bricks of ex- palace . the local people cal the well/ crater as Sumer pitu(well seven). Based on geologikal history, lava craters have com from lava burning mold of mount Kursi. This time is lava is vomited from the crater and floods out directly down to the sna sea because the slope of the sand sea leads to horizontal, velocity of the mold is slower and slower to 5 meters per hour and its surface is firstly frozen and solidified while the inside part ist still mold/ more liquit. lava flow will stop after the lava matters have undergone all solidification . next eruptions cause shaking that affec ist weak ceilings fall and from some wells. There are more than 20 wells and they are scattered around.
The natural beauty and wondervul valley are vascinating panorama, plus ist serene atmosphere and peace we well fel while visiting this area. To get the peak of mount Bromo , we use prepared stairs /steps of concrete stuff. When we get the peak we will see Brome a large caving crater whit is smoke out of the bottom . it shows the vulcano is still active. From the peak we see / enjoy the view of brome crater whit ist thin cloudy smoke, and the backward side we can see the beautifullness land countains sand see whit its natural silhuets that very impresisive. Its other atracctiveess, is that volcano is a place of afinal ritual ceremoni (kasada) of Tengger communlty that has is reprensented by throwing farming product like the fruits and grain onto Moutn Bromo crater. This ceremony has attrated tourists to see the annual ceremony.Next