He made that subterranean passage in the centre of the house. O descendant of Bharata, it was in a level with the floor and closed up by doors (planks).
चक्रे च वेश्मनस्तस्य मध्येनातिमहद् बिलम्। कपाटयुक्तमज्ञातं समं भूम्याश्च भारत॥