Question

What were the walls of the tunnel like cave coated with? How did Thenyak get to know that it was salt?

Answer 1

Answer:

The Western Wall Tunnel (Hebrew: מנהרת הכותל‎, translit.: Minharat Hakotel) is a tunnel exposing the Western Wall from where the traditional, open-air prayer site ends and up to the Wall's northern end. Most of the tunnel is in continuation of the open-air Western Wall and is located under buildings of the Muslim Quarter of the Old City of Jerusalem. While the open-air portion of the Western Wall is approximately 60 metres (200 ft) long, the majority of its original length of 488 metres (1,601 ft) is hidden underground. The tunnel allows access to the remainder of the Wall in a northerly direction.