Malgudi Express: From the pages of RK Narayan to the railway tracks of Mysore. - Vageesh

The Board Reads:
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" East Coast Railway "
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1. The Kothavalasa - Kirandul (KK line)...
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Railway track is passing over this point at a height of 178 feet and the thickness of the Rock Strata at this point is 100 feet below the railway track.
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2. You are here at a height of 2162 ft above mean sea level.
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3. East Coach Railway Wishes you a Happy Trip.
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GUHALU in telugu Means CAVES. Borra Guhalu is the station name where one must alight to visit the Borra Caves, which is considered the deepest caves in India with the height of the cave roof from the deepest point of the cave being 260 ft.
So the track here on the caves is running on a 100 ft thick rock, under which there is a 78 feet gap (Borra).