Pachai Malai is a new find for me.
It is a small hill near Tambaram Sanatorium. You can approach it through the TNHB road off the Chennai Nagapattinam highway near the Export Processing Zone. To reach the top of the hill one has to climb about 150 steps. May not be an issue for most people. Senior citizens and those with ailments need to take care. There is a well kept small temple on top. On a Sunday morning, we could see a few devotees and many fitness freaks climbing the hill along with our Photowalkers.
The view from the hill is really worth the climb. The above image is looking North towards MEPZ and Peria Eri. The lake is close to Thiruneermalai.