Gilbert Hill is a 200-million-year-old basalt rock formation rising 60 metres above the surrounding flatlands in Andheri, one of the most remarkable natural features in suburban Mumbai. The monolithic column of black basalt was formed during the same volcanic event that created the Deccan Traps and is geologically related to similar formations in the United States and Australia. A small temple sits at its summit, accessible via steps cut into the rock.
The hill is a protected heritage site maintained as a small park. The views from the top look out over Andheri's dense suburban fabric with the hills of Sanjay Gandhi National Park visible to the north — a reminder of the natural geography that the city was built upon. The hill is best visited in the morning before the heat builds up.