advise
advisory
alert
announce
arid
beware
blue
boulders
brush
canyon
caution
cliffs
danger
dangerous
drop
dry
edge
erosion
fall
falling
forewarning
geology
highway
hill
hillside
idaho
info
information
informative
look
loose
marker
message
notice
outcrop
outdoors
outside
overhang
placard
post
precipice
protection
recommend
recommendation
roadway
rock
rocks
rockslide
rubble
rural
scenic
sign
signal
signpost
sky
slide
steep
sunny
symbol
transportation
vehicle
warning
yellow