Anand Mahindra spots a rare dinosaur-era rock in the middle of Mumbai in Andheri, found only in the US and Ireland

Mumbai's bustling Andheri hides a 66-million-year-old volcanic rock formation, Gilbert Hill, a geological wonder previously unknown to many, including industrialist Anand Mahindra. This rare basalt column, one of only three globally, has survived urban sprawl and is now gaining attention for its ancient significance and unique beauty, prompting calls for greater recognition.