You wait until you get to the middle on the first one then you jump to the second monorail and then you wait until you are almost at the end and then you fly all the way to the poptropican with the open elevator and then wait until you get to the tube and then click the tube to enter.
To reach the monorail stop in Time Tangled Island on Poptropica, head to the right from the starting area until you reach the Time Machine. From there, jump onto the platform and navigate to the left until you find the monorail station. Interact with the station to board the monorail, which will take you to different time periods in the game. Make sure to explore each area to collect the necessary time artifacts!
Carowinds Monorail ended in 1994.
Carowinds Monorail was created in 1973.
Sentosa Monorail was created in 1982.
Sentosa Monorail ended in 2005.
Tokyo Monorail was created in 1964.
Kitakyūshū Monorail was created in 1985.
Okinawa Monorail was created in 2003.
Metro Monorail was created in 1988.
KL Monorail was created in 2003.
Moscow Monorail was created in 2004.
Johnny on the Monorail was created in 1980.