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North Face Corridor
In 2016 the ScanPyramids team detected a cavity behind the entrance chevrons using muography, which was confirmed in 2019 to be a corridor at least 5 metres (16 ft) long, and running horizontal or sloping upwards (thus not parallel to the Descending Passage).[131][132]
In February 2023 the North Face Corridor was explored with an endoscopic camera, revealing a horizontal tunnel with a length of 9 metres (30 ft) and a transverse section of about 2 by 2 metres (6.6 by 6.6 ft). Its ceiling is formed by large chevrons, like those visible above the original entrance and also similar to Relieving Chambers.[133][134]

Robbers' Tunnel
Today tourists enter the Great Pyramid via the Robbers' Tunnel, which was long ago cut straight through the masonry of the pyramid. The entrance was forced into the 6th and 7th layer of the casing, about 7 metres (23 ft) above the base. After running more-or-less straight and horizontal for 27 metres (89 ft) it turns sharply left to encounter the blocking stones in the Ascending Passage. It is possible to enter the Descending Passage from this point but access is usually forbidden.