Abstract
It is very grateful to write about Karla Cave, how the conception of the rock cut architecture. This research explore the ancient rock cut architecture for example Chaitya Hall, buddhist rock cut architecture and construction of the rock cut architecture. We can learn about the characteristic of Buddhist rock cut architecture, why the buddhist monk choose isolated cave like Karla cave to near to god and also the construction of rock cut cave, what source they use to lighten up the cave to carve the detailing and also the beauty of an ancient rock cut cave India.

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Introduction of Karla Caves ( facts and figure )

Karla Caves is a complex of ancient Buddhist Indian rock-cut architecture cave shrines built over the period of 3rd to 2nd century B.C. Even though the caves were constructed over a period of time and the oldest one is believed to date back to 160 BC. Located in Karla near Lonavala,Maharashtra, the caves are on an major ancient trade route, running eastward from the Arabian Sea into the Deccan. Karli's location in Maharashtra places it in a region that is the division between North India and South India. Buddhism, having become identified with commerce and manufacturing through their early association with traders, tended to locate their monastic establishes in natural areas close to major trade routes so as to provide lodging houses for travelling traders.
The Buddhist caves at Karla are one of the finest examples of ancient rock-cut caves to be found in India. The magnificent hall that adorns the main cave reflects the high degree of architectural skills of the artisans who carved and embellished the caves on such a difficult terrain.


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Karla Cave as the finest example of ancient rock cut architecture.
This complex of well-preserved, Karla Buddhist caves is built on the difficult terrain of a rocky hillside. The complex also happens to be one of the finest examples of the ancient rock-cut caves found in India. The large Karla caves were excavated by hewing out the rock. Great windows light the interiors.

There are fact saying that the natural lighting from the great window helps the workers to built the temple (carvings and many more). The light shinning to the cave wall and was reflected to other cave wall provide bright surrounding in the cave.
The main cave has a magnificent Chaitya with huge pillars and intricately carved relief's dating back to the 1st century B.C.
Chaitya Hall with Stupa
There are well carved sculptures of both males and females, as well as animals, including lions and elephants, a testimony to the skill of the artisan builders.

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Within the complex are a great many other magnificently carved prayer halls or chaityas as well as viharas or dwelling places for the monks. A feature of these caves is their arched entrances and vaulted interiors.
The Interiors

Built in the time of the Theravada Buddhists, these caves do not actually show the image of Buddha. The outside facade has intricate details carved to imitate finished wood. The central motif is a large horseshoe arch. There is a lion column in front, with a closed stone facade and torana in between.

During this period it is likely that thousands of caves like Karla were excavated in the Sahyadri Hills

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The Chaitya Hall At Karla

The monumental culmination of the extraordinary art form is the famous mammoth hall (chaitya) at Karla. The gigantic hall, built in the first century AD, is adorned with architectural motifs, lions, and elephants. The architect of this hall was fully aware of the potential of the visual drama and awe that could be infused into a visitor entering such a vast, sacred hall. At the entrance are two enormous 50-feet-high columns crowned by glorious lion sculptures. One passes into an anteroom lit by a recessed sun window set in a huge horseshoe archway. The light is wonderfully diffused. The walls are richly sculpted, and at one time, there were frescoes too. Moving further in, one discerns the most sacred object of veneration looming out of the dark-the stupa. Magic is created by a soft luminosity that filters in through the rows of flanking columns. The stupa seems situated in a fathomless cavern.
Though many rock-cut techniques evolved over the centuries, none have ever rivaled the chaitya hall at Karla. It embodies the powerful relationship that has endowed the caves of the Buddhists with magical qualities beyond the comprehension of day-to-day architecture.

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Why they choose cave as a sacred place for Buddhist monk?

The Buddhist monks generally chose isolated rocky outcrops and hillsides to make rock-cut caves, which housed prayer halls or chaityas within them. From the late 2nd century BC until the mid-2nd century AD, thousands of caves like Karla were excavated in the Sahyadri Hills. They were apparently meant for all Buddhist communities. These cave sites were not randomly chosen. They were selected in accordance with the Buddhist prescription that the holy men should live neither too near nor too far from the cities-not too near to be distracted by material life, nor too far to make begging rounds impractical or to put the monks out of reach of people. Naturally, the existence of a natural cave was another determining factor. From this point of view, Karla was excellently situated. It was a natural cave and also used to be along one of the major caravan trading routes.

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Buddhist architecture (rock-cut caves)
Rock-cut structures are one of the most primitive forms of architecture and are found in many places in India. The first rock-cut temples are a part of the Buddhist style of architecture, which originated in India after the death of Gautama Buddha (the founder of Buddhism).
The main monuments in the architectural repertoire of Buddhist style are
(a) the stupa (hemispheric funerary mounds built over the remains of Lord Buddha, and other Buddhist saints and teachers);
The Chaitya and the Stupa
(b) the chaitya (large hall for congregation and worship, having a central holy image or relic in one end);
(c) the viharas (monasteries, where Buddhist monks stayed);

(d) the rock-cut caves.

The rock cut caves are the most interesting part of Buddhist style of architecture. Cool in summer, cozy in winter,
The rock-cut caves are the most interesting part of Buddhist style of architecture. Cool in summer, cozy in winter, these rock-cut caves are particularly well adapted to Indian conditions, both material and spiritual. Apart from the climatic suitability, the concept of the cave strikes one of the fundamental chords of Indian spirituality-of being one with nature. At the same time, it must not be forgotten that for every rock-cut monastery there must have been scores of structural buildings of which no trace has survived. So, the Buddhist monks built not just shelters but everlasting tributes to their beliefs. The Buddhist monks diligently carved out replicas of stupas, chaitya halls, images and shrines out of rocky hillsides. The Karla Caves in Maharasthra are one of the finest examples of this architectural style.

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Construction of rock-cut caves
The large number of cave shrine abandoned at various stages of construction gives us a broad outline of the ma
The large number of cave shrines abandoned at various stages of construction gives us a broad outline of the manner in which they were dug out. Work proceeded from the top downwards, eliminating the need for scaffolding. Caves were created in groups to provide accommodation for outside workers, since such undertakings were beyond the resources of a very small religious community. They consist of two types: chaitya halls and viharas.
The actual process of construction is fascinating. The chosen hillside was cleared of shrubs and other growth.
The parallel tunnels were then run to the desired depth and timber wedges driven vertically into the exposed rock at convenient centers.
When moistened, these wedges expanded and dislodged large chunks of stone that were removed through the mouth of the cave.
Thus the rock was exposed. At this point all the exposed rock would be chiseled and polished and only then would the workmen continue the excavation.
Gradually, with mere one-fourth-inch chisels and hammers as the tools, the excavation was carried on from the ceiling downward-a tedious process but one that has survived, as Karla testifies.
Once excavated, timber trelliswork and balconies were added as trimmings.

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Conclusion
Most of the architecture in this time of period are based on their believes.
Society at that time tries to be near to their god and to bring the superiority of god and goddess in their daily life.
The carvings, monument, sculptor and other elements gives the people the reason to explore the nature.