Compared to the south side counterpart, the cycling exploration to Lembang Fault’s north side was more challenging. It is significantly longer, because it is further to the north from the city, and it allows end-to-end 29 km exploration, from east to the west. It also features two valleys, which contributes to added climbing sections along the road. However, it also rewarded me with clear view of the fault, stretching from Mount Palasari in east end all the way to the west.
Stretching 29 km from east to west, Lembang Fault was one among the most prominent geological features of Bandung Basin. From the city, it is easily recognized as elongated hill in the north, starting from Mount Palasari in the east, sloping down all the way to north of Cimahi in the west. Created through eons of tectonic plate movement, the active fault lifted the higher southern side, exposing wall of ancient rocks to the lower northern side. It was the southern side, especially the eastern side of Maribaya Valley, that I explored for this cycling trip.
Even though not as famous to tourists as Tebing Keraton, Gunung Batu (lit. “Rock Mountain”) is well known among local geologists. It is often considered as the “peak” of Lembang Fault, even though it is 500 m lower in elevation than Mount Palasari at the east end of the fault. The rocky structure is believed to be the collision point between eastern and western segment of the fault.