Rajrappa Falls has tremendous geographical significance. The Damodar valley at Rajrappa is a typical example of polycyclic valley or topographic discordance which is characterized by two storey valley. The Damodar developed its broad and flat valley of senile stage before the onset of Tertiary upliftment. The river was rejuvenated due to upliftment of landmass during the Paleogene and Neogene Periods (66 million to 1.8 million years ago) by the side effects of the Himalayan orogeny and thus the Damodar excavated its new deep and narrow valley of youthful stage within its broad and flat valley of senile stage. The Bhera river coming from over the Ranchi plateau makes a waterfall while joining the Damodar and thus presents an example of a hanging valley. The Damodar gorge near Rajrappa is a typical example of incised meander.
Rajrappa is a Hindu pilgrimage centre attracting an estimated 2,500-3,000 persons daily. The main attraction of the Chhinnamasta (also known as Chinnamastika) temple located here is the headless deity of goddess Chinnamasta which stands on the body of Kamdeo and Rati in the lotus bed. The Chhinnamasta temple is very popular for its Tantrik style of architectural design. The temple is very old but has that essence of enchantment. Apart from the main temple, there are ten temples of various gods and goddesses such as the Sun God and Lord Shiva. Animal sacrifice is still practised in the temple. The sacrificial animals are killed on Tuesdays and Saturdays and during Kali puja.
Rajrappa also is a pilgrim centre for the Santals and other tribals who come for immersion of the ashes of their loved ones in the Damodar. They come mostly during the month of December, in groups known as yatri. As per their mythology it is their final resting place. In their folk songs Rajrappa is referred to as "Thel Kopi Ghat" (Water Ghat) and they use oil after bathing. They come in significant numbers from the southern parts of Jharkhand state such as East and West Singhbhum and Saraikela districts.
Rajrappa is a project under Central Coalfields Limited (CCL), a subsidiary of Coal India Limited and is part of Ramgarh Coalfield. It is one of the biggest coal-fields in its region. It is widely known as the Rajrappa Project, which consist of the main quarry (a huge open cast mine), offices, colonies, recreation facilities, shopping complexes, a police out-post and public utility buildings. It is a complete township in itself.
DAV Public School Rajrappa is one of premier schools of the area. The school is sponsored by Central Coalfields Limited.It has a strength of about 2500 students and has a huge infrastructure.It has also got a state level athletics stadium.saraswati vidya mandir which is located in the centre of c.c.l Rajrappa Project colony, a capacity of 2000 students.which is affiliated from CBSE Board delhi.