Answer: descent

AnswerCrossword Clue
DESCENT

Start of a trip in a bathysphere

DESCENT

Fall.

DESCENT

Lineage.

DESCENT
Comedown.
DESCENT
Ancestry
DESCENTHeritage
DESCENTDownward slope
DESCENTRappelling
DESCENTRocket maneuver
DESCENTA ... of woodpeckers
DESCENTPedigree.
DESCENTHalf of a mountaineering expedition
DESCENTFear Factory song that goes down?
DESCENTFlight portion
DESCENTDownward inclination
DESCENTPlane maneuver
DESCENTElevator experience
DESCENTTrip to a mine
DESCENTSpelunker's activity
DESCENTMountain climber's return trip
DESCENTFall
DESCENTMountain climber's return
DESCENTDrop from above
DESCENTLineage
DESCENTSecond half of a mountaineer's trip
DESCENTLanding element
DESCENTDown slope
DESCENTDrop
DESCENTContinued reduction in altitude
DESCENTScuba diver's dive
DESCENTDownward path
DESCENTFlight pattern
DESCENTLanding preceder
DESCENTExtraction
DESCENTDarwin's study
DESCENTDownward course.
DESCENTA parachute drop.