underground

underground railway

railway

train

tube train

tunnel

transport

public transport

public

people

talking

chatting

voices

human

woman

station

station platform

platform

leaving

arriving

electric train

journey

moving

doors opening

whirring

humming

electricity

doors closing

women

men

rattling

carriages

doors

closing

accelerating

whining

clatter

walla

hubbub

crowd

metro

city

urban

atmosphere

ambience

scenic

male

female

talk

chat

voice

leave

arrive

move

door open

whir

door close

rattle

carriage

door

close

accelerate

whine