The Sempah Volcano Complex that located close to Jalan Persekutuan 68 (Jalan Gombak-Genting Sempah), is one of the geosites of the Gombak-Hulu Langat Geopark and has scientific and aesthetic heritage value. The Sempah Volcanic Complex can be found on Jalan Persekutuan 68 (Jalan Gombak-Genting Sempah), and a portion of it can be found on Highway E8 (Kuala Lumpur-Karak Highway). The deep passage’s outcrops are mostly weathered and are 260 million years old.
This volcanic complex is made up of volcanic and subvolcanic rocks such as lava tuff, lava, and subvolcanic porphyrite with orthopyroxene phenocrysts. This combination of volcanic complexes is extremely rare, and the observation area is limited to a few sites. During the Late Permian, an active tectonic period, this volcanic complex overlaid older rocks before being metamorphosed by the granite that created the central range at the end of the Triassic.
This rock is located between the Bukit Tinggi Fault and the Kongkoi Fault. Outcrops in the field may be found along the Gombak-Genting Sempah inner road, as well as along the Karak highway wall. The majority of the outcrops in the deep tunnel have weathered but are still safe for research purposes.
This is Gombak-Hulu Langat Geopark’s geosite (G10)
**This product are not open to public and only for research and study purpose as part of Gombak-Hulu Langat Geopark’s geosite.