THE OVERLAND EOUTE — OGDEN TO SAN ERANCISCO, 227 



(21.1 miles) the bed of the Ocean Shore RaUroad is cut in bold 



fine 



rocks 



Martmez (Eocene) formation. The contact of these rocks with a 



large mass ol pre-1^ ranciscan granite 

 Montara Momitam, a bold ridge tha 



ilroad 



Green Canyon. At the north end of Seal Cove, opposite Moss Bond 



1 



fossiliferous 



here forming the base of the Merced (PUocene) and resting on the 

 granite of Montara Mountain are well exposed. 



This delightful excursion maj be extended down the coast to 

 Pescadero, and the return made by stage across the range and rift 

 zone to San Mateo; or the traveler may continue down the coast to 

 Santa Cruz and return across the range on the Southern Pacific line 

 either by way of the Big Trees and Los Gates or by Pajaro and Gilruy. 



thin 



Hill 



Pomt 



most readily by the Kentucky Street cars from Thir 



streets. 



point is serpentine. A mass of 



basalt in the sea cliffs on the south side presents a remarkable sphe- 

 roidal and variolitic structure. 



The summit of Mount Tamalpais is very easily and comfortably 

 reached by ferry to Sausalito^ electric train to Mill VaUey, and a 



railway to the hotel on the top. The ferry trip is one of 

 be had on the bay. The steamer passes close to the small 

 island of Alcatraz^ used as a military prison. To the west may be 

 seen the ocean through the Golden Gate. Angel Island, with its 



mountain 

 the best b 



interesting glaucophane schists, serpentine, and other rocks, lies to 



me right as the boat 

 of both islands belong 

 stone. The trio from 



ks 



:t-^ 



+ 



opportunity to see some 



particularly 



bay appear to have flooded what was once a land vaUey- Mill Yal- 



frame 



standing. 



from 



summit of Mount Tamalnais are extensive and varied. To the 



Mount H 



throufirh 



meridian and base line from 



larg 



dark-green bordering marsh 



Is carer at hand is the bay, 



tine tidal creeks. Close under the mountain 



