2 22 Bog-Trotting for OrcHids 



and wore through the wall of rock spanning the Deer- 

 field Valley. Hawthorne compared this arch to ' ' the 

 arched entrance of an ancient church, which it might 

 be taken to be, though considerably dilapidated and 

 weather-worn. ... It was really like the archway 

 of an enchanted palace, all of which has vanished ex- 

 cept the entrance — now opens only into nothingness and 

 empty space. . . . This curiosity occurs in a wild 

 part of the river's course, and in a solitude of moun- 

 tains." ' Dr. Wolfe says: " The summit of the arch 

 and the water-worn pillars upon either side display 

 ' pot-holes' and other evidences of erosion, and in the 

 bed of the current lie fragments of similar attrite rocks 

 which seem to indicate that at some period a series of 

 arches spanned the entire space from mountain to 

 mountain." ^ 



Other erosions known as the " Twin Cascades" are 

 found on the eastern slopes of Hoosac Mountain, above 

 the eastern portal of the Tunnel, formed ages before 

 the Hoosac Lake rippled in the "hollow vale" at 

 North Adams. The Natural Bridge of the Mayunsook 

 Valley is one of the greatest natural formations in 

 Berkshire Highlands, and was also caused by erosions 

 of the ice-currents ages ago. 



On August 1 6th, this season, a great landslide oc- 

 curred on the southern brow of Grey lock, caused by a 

 cloudburst. It began within a few feet of the summit, 

 widening as the loosened soil slipped oflf the bedrock 



' Hawthorne, American Notes, August 31, 1838. 

 ' Dr. T. F. Wolfe, Literary Shtines, 173, 1895. 



