Answer: gulfs

AnswerCrossword Clue
GULFS

Chasms

GULFS

Wide separations

GULFS

Deep hollows

GULFS
Partly enclosed ocean areas
GULFS
Wide gaps
GULFSLarge bays
GULFSMexico and Panama
GULFSVast distances
GULFSChasms.
GULFSMexico, Guinea, etc.
GULFSCalifornia and Mexico.
GULFSUnbridgable gaps.
GULFSGaps to be bridged
GULFSLarge bodies of water
GULFSRope bridge sites
GULFSPersian and Mexico, for two