Answer: valleys

AnswerCrossword Clue
VALLEYS

Mountain separators

VALLEYS

Big dips

VALLEYS

Death and San Fernando

VALLEYS
Depressed areas
VALLEYS
Simi and Silicon
VALLEYSHollows.
VALLEYSNeighbors of hills.
VALLEYSSquaw et al.
VALLEYSForge and Stream
VALLEYSWhere streams flow
VALLEYSColder spots, often
VALLEYSLow points