Miles and 

 Kilometres. 



126 



ANNOTATED GUIDE— (Contd.) 



o. m. Tulameen. — Alt. 2,550 ft. {777-2 m.). 



o. km. Otter Valley — Between Tulameen on the 



Great Northern railway and Merritt on the 

 Canadian Pacific, a distance of 53 miles (85-3 

 km.), there is at present no railway connection 

 and this portion of the route has to be made by 

 carriage. 



On leaving Tulameen the road runs northward 

 up Otter valley, skirting the western shore of 

 Otter lake for a distance of three miles (4-8 km.) 

 in the course of which numerous exposures of a 

 Tertiary granite are seen. Otter valley for 

 18 miles (28-9 km.) or as far as the forks, is a 

 fairly broad, flat-bottomed valley, showing 

 evidence in its shape of having been occupied 

 by a valley glacier moving southward. It is 

 typical of a number of deep trench-like valleys 

 that have been developed in the Interior Plateau 

 region. The rocks, besides the granite already 

 mentioned, consist of Triassic schists, green- 

 stones, and limestones extending as far as 

 Thynne creek, beyond which younger Tertiary 

 lava flows overlie them. 



18 m. Canyon House — At the forks of the valley, 



28-9 km. where the Canyon House is situated the valley 

 appears to end abruptly, but the road turns 

 sharply to the east following a narrow gorge 

 for a few miles. In this gorge narrow beds of 

 Tertiary sediments, which may be correlated 

 with Dawson's Tranquille beds, rest on top of 

 lavas and tufi^s, and are covered conformably 

 by a thick flow of columnar basalt. 



Leaving Otter creek the road mounts the 

 western slope of the valley to an elevation of 

 3 ,400 feet ( 1 ,036 • 3 m . ) where it is virtually at the 

 general level of the Interior Plateau. The 

 main characteristics of the plateau are here well 

 seen, and for the next 25 miles (40-2 km.) the 

 road continues across the upper levels of the 

 plateau running through an open, rolling, park- 

 like country, which in springtime is one of the 



