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Birth Pain Vestiges on the Earth’s Surface
The East Rift Valley is a long, narrow valley flanked by the Central Mountain Range to the west and the Coastal Mountain Range to the east. This is where the Eurasian and the Philippine tectonic plates collide, resulting in the creation of many fault lines.



Three main river systems, namely, the Hualien River, the Siouguluan River, and the Beinan River, create a closely-knit network of waterways in the area. Each of these rivers originates at high mountains 2,000 to 3,000 meters in elevation. These rivers have caused the formation of a variety of geological landforms, such as
canyons, waterfalls, hot springs, meanders, river terraces, alluvial plains, faults and badlands. They have also created many unique natural landscapes.



Of these sights, the most spectacular waterfalls in the area are the 65-meter Luoshan Waterfalls located in the upper reaches of the Luozih River in Fuli’s Luo Mountain. The Rueisuei Fault, typical of the faults found in the area, is located to the northeast of the Saoba River. Also called the "Saoba Fault" it is made up of discontinuous strata and almost vertical gravel layers. 



The most typical of the badlands terrain can be found at Liji Moon World. The land is formed by layers of mud that have been pushed up through tectonic movements from the bottom of the sea to the surface. The soft consistency of the geology and the long-term rain erosion has created many peculiar natural landscapes.
Variations on the Theme of Rivers and the Earth
Hualien River, Siouguluan River, Beinan River Rivers are the lifelines of the East Rift Valley. The three main rivers systems, namely the Hualien River, the Siouguluan River, and the Beinan River, are situated in the northern, central and southern parts of the valley respectively. The drainage areas of these three rivers are widely spread out, creating an extensive network of waterways spanning the whole valley area. This network not only influences the rift valley landscape, but also gives rise to the rift valley cultural life.



Most of the rivers originate in the steep Central Mountain Range. The competing of the rivers and the mountain ranges as they weave around each other, intersecting and blending, results in the creation of breathtaking natural scenes, including hot springs, waterfalls, lakes, canyons, alluvial plains and river terraces.



During sharp increases in the amount of water carried by these mountain rivers, large volumes of sand and stones are carried away, resulting in the formation of V-shaped river valleys with evident ablation.



 The Siouguluan River is a typical example of this phenomenon. The Dagangkou stratum of the Coastal Mountain Range is made up of ocean sediment, softer and more easily eroded. Thus, in old times, the lower reaches of the Siouguluan River eroded the Coastal Mountain Range, cutting magnificent canyons, wiping away the watercourse of the old Hualien River, and forming the present Siouguluan River. The numerous tourists that go rafting down this river can enjoy the magnificent scenes on both sides of the river.



The Sinwulyu River experienced similar a phenomenon, forming the gorges and cliffs that are found along the Southern Cross-Island Highway.



River terraces are the result of sedimentation and segmentation. Large amounts of pebbles washed downstream gradually form sedimentation layers in the river bed. After a period of time, the rising of the earth's crust causes increased erosion to take place, resulting in the flat sedimentation layers on the river bed eroding further down to create a new, lower river channel. Thus, the old river bed is higher than the new river bed. This process repeats itself over and over, forming river terraces.
The Heights and Depths of Towering Waterfalls
Due to the collision of tectonic plates, a large number of faults have been created in the rift valley. Added to that is the branching of the three major water systems which occur mostly to the east of the Central Mountain Range. The water rushes down to the valley from the high mountains, descending rapidly over a length of just a few kilometers. This rapid change in altitude results in an attractive river landscape. The Luoshan Waterfalls at Fuli, and the Fenghuang Waterfalls at Fenglin, are both examples of water scenes greatly enjoyed by tourists. 

Fonghuang Waterfalls and Luoshan Waterfalls
Recounting the Past Events of the Mountains and Rivers
The Liji Mélange Badlands are land surfaces that have experienced severe erosion, resulting in numerous deep trenches that are rugged and hard to traverse. These areas are unsuitable for farming.



The Liji Mélange is spread extensively over the southern end of the Coastal Mountain Range. It starts from a place close to Taitung City, and extends north for about 70 kilometers along the western edge of the Coastal Mountain Range, going to Lehe, close to Antong Hot Springs. The Liji Mélange's most typical exposure is located at Liji Village, 8 kilometers north of Taitung City.
The Liji Mélange is comprised of a thick layer of mud sediment, which is formed by thick deposits of sandstone alternating with layers of shale or mudstone. The Liji Mélange has the following remarkable characteristic: At its exposure area, the commonly-seen badlands terrain is the result of the Liji Mélange's clayey mudstone forming a complicated, confused, inconsistent rock mass that is made up of a variety of rocks from different places. 
 
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East Rift Valley National Scenic Area Administration, Tourism Bureau, MOTC, All rights reserved
Office Address: No.168, Section 2, Xinghe Road, Neighbor 17, Hegang Village, Ruisui Township, Hualien County 97844, Taiwan, R.O.C.,Office map (Open the new window) Tel: 886-3-887-5306, Fax: 886-3-887-5358
Liyu Lake Service Station Address: No. 100, Huantan Road, Chinan Village, Shoufeng Township, Hualien County 97445, Tel: 886-3-8641691, Fax: 886-3-8641703
Luoshan Service Station Address: No. 39, Neighborhood 9, Luoshan Village, Fuli Township, Hualien County,98342 Tel:886-3-8821725 Fax:886-3-8821464
Luye Service Station Address: No. 49, Guntai Road, Yongan Village, Luye Township, Taitung County 95541, Tel: 886-8-9551637, Fax: 886-8-9551466
Office Hours: 08:30~17:30      Toll-Free Travel Number:+886-800-000115
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