Here There be Dragons- New Title and Edit

[Semicircle]

At the edges, fabric frays. 
Rivulets of water wander through 
sage grass like loose threads.       I cannot imagine a connection between small streams and loose threads.

Burned out cars 
and abandoned busses 
strewn like driftwood 
on the side of the 101. 

Several birch trees 
huddle together. Foliage stripped.      mostly stripped adds unnecessary detail
Exposed branches reach toward 
the tents pitched off the road. 

The waves break here. 
Sudden and violent. 

A crow’s skeleton rests 
on a small island.        Don't describe things as odd or strange. How are they odd or strange?
Its wings outstretched. 

Each grain of sand 
working its way into the tapestry. 
At the edges, where the fabric frays.

There are a lot of prepositions immersing you into an environment without much to do. I've made a couple poems with this problem.  

Past tense and present tense situations oscillate between each stanza.
The reader has to shift gears often.