A star ship (Enterprise ?) is in audio contact with a Star Fleet
officer (female) trapped (injured/sealed in), alone in a cave. The
ship is en route to rescue her but it is going to take some
time.to
reach the planet. Meanwhile, someone on the ship is keeping her
company by talking to her and/or sharing life stories. Spoiler
Alert!!!!!!!!!!!! Spoiler Alert!!!!!!!!!!!! Spoiler
Alert!!!!!!!!!!!! When the ship finally reaches her planet they learn
that the atmosphere has been acting like a time warp conduit to the
past and she has been dead for a long time. Her clothes and other
artifacts indicate her fate.