https://www.hindudevotionalblog.com/2016/11/four-famous-mahabalipuram-cave-temples.html
The cave temples of Mahabalipuram (also known as Mamallapuram) are rock-cut mandapas constructed during the 7th and 8th centuries by the Pallava dynasty, forming a key part of the UNESCO World Heritage Site designated in 1984. These structures are primarily located on the hillock west of the town and feature intricate bas-reliefs depicting Hindu mythology, with a total of eleven such cave temples identified in the region.
https://www.mahabalipuram.co.in/tirumurthi_temple_mahabalipuram.php
Key cave temples include the Varaha Cave Temple (dedicated to Lord Vishnu in his boar avatar), the Trimurti Cave Temple (honoring the trinity of Brahma, Vishnu, and Shiva), and the Mahishasuramardini Cave Temple (featuring a renowned sculpture of Goddess Durga slaying the buffalo demon). Other significant sites include the Krishna Cave Temple (showcasing the myth of Krishna lifting Govardhana Hill), the Tiger Cave Temple (dedicated to Durga riding a tiger), and the unfinished Panchapandava Cave Temple.
https://whc.unesco.org/en/list/249/
Location: Kancheepuram District, Tamil Nadu, on the Coromandel Coast.
Architectural Period: Early Pallava period (Mahendra style) to late Pallava period (Mamalla and Rajasimha styles).
Visitor Information: Open daily from 8:00 AM to 6:00 PM (some sources cite 6:00 PM for Trimurti specifically) with free entry; the best time to visit is between November and February.
Notable Features: These temples utilize the natural rock face for carving, with some featuring Yali (mythical lion-like creatures) and Kudu (horse-shoe shaped) windows.