This question asks us to evaluate the correctness of four statements regarding the historical Ajanta Caves. Let's examine each statement to determine their accuracy.

Ajanta Caves Location Accuracy

Statement i: They are located in the Aurangabad district of Maharashtra.

• This statement is factually correct. The Ajanta Caves are situated in the Sahyadri mountain ranges, near the village of Ajanta in the Aurangabad district of the Indian state of Maharashtra.

Ajanta Caves Period and Number Details

Statement ii: It has twenty-nine caves, built over a period of almost eight centuries.

• The Ajanta Caves complex comprises approximately 29 rock-cut caves, which include viharas (monasteries) and chaityas (prayer halls).
• These caves were excavated in two major phases. The earlier phase dates back to around the 2nd century BCE, and the later phase spans from the 5th century CE to about 480 CE. This construction period covers roughly six to seven centuries, which is often approximated as "almost eight centuries" in a broader sense, highlighting the long duration of their creation and use.

Ajanta Caves Cave 26 Features

Statement iii: Cave number 26 is very big and entire interior hall is carved with variety of Buddha images.

• Cave 26 is indeed one of the largest caves at Ajanta and is a vihara.
• It is known for its extensive sculptural panels depicting various aspects of the Buddha's life and teachings. A significant feature is the large reclining Buddha sculpture representing the Mahaparinirvana (Buddha's final enlightenment and passing into nirvana). The interior hall does feature numerous carved images.

Ajanta Caves Prominent Sculpture

Statement iv: The biggest one is Mahaparinibbana image.

• This statement refers to the monumental reclining Buddha sculpture in Cave 26, depicting the Mahaparinirvana.
• While "biggest" can be subjective (referring to the sculpture itself or the cave it's in), the Mahaparinirvana sculpture in Cave 26 is exceptionally large and artistically significant, often considered one of the most impressive and prominent artworks within the Ajanta complex. It is a key highlight of the site.

Based on the analysis of each statement, all four points accurately describe aspects of the Ajanta Caves. Therefore, all the given statements are correct.