Whilst the 13 queue line isn’t abandoned, there are other parts of Dark Forest with abandoned/old features that are left from years gone by.
On google maps you can see the old area for the Soakasaurus water game that was in UG Land. It is behind the lockers building in Dark Forest and the old Fastrack kiosk is the building that used to be used as the pay station for Soakasaurus.
Semi circle of what is left of this attraction:
How it looked on UG Land versus the view today with the lockers built across the entrance. With the kiosk tucked in the corner being the old pay station.