108 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.1 



PLATE 43 



Fig. 93 Sea stack which stands in the south cove at Agua Verde Bay, Gulf of 

 California. An osprey's nest was built upon its topmost pinnacle. 



Fig. 94 The dock at Salinas Bay, Carmen Island, Gulf of California. An ex- 

 tensive salt works is served by a short railway upon which the sacked 

 salt is transported to lighters which transfer it to cargo vessels. Velero 

 III may be seen in the distance. Charts 54, 55, p. 398. 



PLATE 44 



Fig. 95 A bold headland of metamorphic rock marks the entrance to Con- 

 ception Bay, Gulf of California, an indentation of the peninsula nearly 

 twenty miles long and from one to several miles wide, with anchorage 

 depths to seventeen fathoms. Chart 56, p. 399. 



Fig. 96 The Sierra de la Giganta rises almost vertically from the shores of 

 Escondido Bay. The mile-high mountains consist of bedded sediments, 

 the erosion being similar to that of the Grand Canyon. 



PLATE 45 



Fig. 97 Canyon in the Sierra de la Giganta, Escondido Bay, Lower California, 

 showing Washingtonia palms (Washingtonia filifera) and other char- 

 acteristic vegetation of the region. 



Fig. 98 Escondido Bay, Gulf of California, seen from a mile or more inland. 

 The island of Danzante is seen in the right background, Carmen Island 

 in the left background. The estuary between the landlocked body of 

 water at the left and the open bay to the right passes behind the hill in 

 the middle distance. 



PLATES 46, 47 



Fig. 99 (A panorama.) Escondido Bay, Lower California, showing Puerto 

 Escondido in the extreme left, the islands of Carmen and Danzante in 

 the middle distance and the Sierra de la Giganta to the right. The 

 Velero III may be seen at anchor below the north end of Danzante 

 Island. 



Fig. 100 The road from Mulege to La Paz follows the western shore of Con- 

 ception Bay and in places has been cut out of the rock. The formation 

 shown is a breccia probably representing an ancient alluvial fan. 



Fig. 101 The region north of Puerto Escondido shows clearly the effects of sub- 

 mergence. The hills to the right are slowly being "drowned," their 

 valleys becoming shallow bays. A typical hacienda is shown at the 

 clearing at the left. 



PLATE 48 



Fig. 102 San Marcos Island, Gulf of California, seen from the deck of Velero III 

 during dredging operations. Chart 57, p. 399. 



Fig. 103 Tortuga Island, Gulf of California, viewed from the south side. The 

 rim of the crater is of lava, the lighter-colored material ash. No recent 

 volcanic activity has been observed. Chart 57, p. 399. 



Fig. 104 Interior of the crater at Tortuga Island, Gulf of California, showing 

 alternate beds of lava and volcanic ash. The crater rim is unbroken 

 and is half to three quarters of a mile in diameter. 



