Somnath Temple is an important pilgrimage site for Hindus located in:

Gujarat
Maharashtra
Odisha
Tamil Nadu

The correct answer is Gujarat.

Somnath Temple is a Hindu temple dedicated to the god Shiva. It is located in the town of Somnath in Gujarat, India. The temple is one of the 12 Jyotirlingas, the holiest shrines of Shiva. The temple was destroyed several times by Muslim invaders, but it has been rebuilt each time. The current temple was built in the 19th century.

The temple is a major pilgrimage site for Hindus. It is believed that a visit to the temple will absolve one of all sins. The temple is also a popular tourist destination.

The other options are incorrect. Maharashtra is a state in western India. Odisha is a state in eastern India. Tamil Nadu is a state in southern India.