He told how he had followed the cave till it widened out into a spacious meadow, down the middle of which meandered the stream that flowed from its mouth. On either side of the river stood stately palaces of marble (? stalactite formation), and in front of these, on thrones of gold set with jewels, sat all the kings of the Jann, attended by their houris and their vassals. They summoned the intruder before their _diwan_, and sentenced him to instant death for having violated their privacy: but on his plea of strong compulsion, he was reprieved and released; though awful warnings were uttered against any other profane person who should presume to enter this their sanctuary. Such is the story told to us by the Patriarch of the Nestorian Church; a gentleman who is sufficiently educated to smile at the superstitions of his fathers--at least during the day, and in European company. And anyone who will take magnesium wire and penetrate into the cavern, will certainly gain much local _kudos_, and may possibly have an interesting experience. "Will you come with us, your Grace, and see what is really in the cave?" we asked of the Patriarch when he had finished his story. "I will Rabbi--that is if you will go in first;" replied his Beatitude.[105] [Illustration: CHURCH OF MAR B'ISHU] Two roads lead from Diza of Gawar (the name Diza is a common one) down to the plain of Urmi; but we took the more difficult and picturesque, leading down the valley of Mar B'Ishu. This is one of the most famous of the shrines of the Nestorian Church, commemorating a hermit round whose cell a monastery subsequently gathered. The monastery has passed away, but a group of three Christian villages fill the valley (a small side gorge just off the main road); and here the church still stands, an unusually elaborate specimen of Nestorian architecture. Externally it is like all the mountain churches, a mere cube of masonry; though rather larger than usual, for in this case the external dimensions are an approximate square of eighty feet. The building has a stone vault, the flat mud roof of the country being superimposed as an outer covering. It was, however, too great a feat for the mountain builders to throw an arch of eighty feet span, twenty feet being as much as they could compass; and hence the interior of the building is divided into the multitude of separate chapels and vestibules, sacristies and baptisteries, as shown on the plan--a plan which may give some idea of the building, but can make no claim to accuracy.