You see a yellow notice of construction:
NOTICE OF CONSTRUCTION
Due to poor quality and safety tests, the elven quick car terminals
have been permanently closed for the safety of all people. Please
use overland routes to get to your destination. The dwarves are
busy building new scenario for your enjoyment. My apologies for
this inconvenience.
Caledon
Another sign below the notice reads:
Dwarves needed for excavation of mountainous terrain. Please inquire.