CHAPTER V. 
FROM ECHO PARK TO THE MOUTH OF THE UINTA RIVER. 
The Yampa enters the Green from the east. At a point opposite its 
mouth, the Green runs to the south, at the foot of a rock, about seven hun 
dred feet high and a mile long, and then turns sharply around it to the right, 
and runs back in a northerly course, parallel to its former direction, for 
nearly another mile, thus having the opposite sides of a long, narrow rock 
for its bank. The tongue of rock so formed is a peninsular precipice, with 
a mural escarpment along its whole course on the east, but broken down at 
places on the west. 
On the east side of the river, opposite the rock, and below the Yampa, 
there is a little park, just large enough for a farm, already fenced with high 
walls of gray homogeneous sandstone. There are three river entrances to 
this park : one down the Yampa; one below, by coming up the Green; and 
another down the Green. There is also a land entrance down a lateral 
canon. Elsewhere the park is inaccessible. Through this land-entrance by 
the side canon there is a trail made by Indian hunters, who come down here 
in certain seasons to kill mountain sheep. 
Great hollow domes are seen in the eastern side of the rock, against 
which the Green sweeps ; willows border the river ; clumps of box-elder 
are seen; and a few cottonwoods stand at the lower end. Standing opposite 
the rock, our words are repeated with startling clearness, but in a soft, mel 
low tone, that transforms them into magical music. Scarcely can you 
believe it is the echo of your own voice. In some places two or three 
echoes come back ; in other places they repeat themselves, passing back and 
forth across the river between this rock and the eastern wall. 
To hear these repeated echoes well you must shout. Some of the 
party aver that ten or twelve repetitions can be heard. To me, they seem 
to rapidly diminish and merge by multiplicity, like telegraph poles on an 
