You can buy it from the ticket vending machines You need to buy a 2 zones extra-urban ticket.
“There is a greater darkness than the one we fight. It is the darkness of the soul that has lost its way. [...] Greater than the death of flesh is the death of hope, the death of dreams.”
Yes, they are. For the return journey just buy a second t2 zone ticket from the vending machine
“There is a greater darkness than the one we fight. It is the darkness of the soul that has lost its way. [...] Greater than the death of flesh is the death of hope, the death of dreams.”