Directly after the drop, the two loops exist followed by a small hill with a banked turn.

A passing loop on the SSFL exists here as well.

A loop and siding for freight services originally existed behind the up platform, but the loop was later removed, leaving just the siding.

If the exit block is unreachable from the entry block, an infinite loop exists.

The loop itself still exists, although it was penetrated by a bomb and flooded during the Blitz in the Second World War.

This loop no longer exists.

The crossing loop in Oberspree existed until September 1984, but the access points to it had been removed previously.

Or does the loop exist merely in Addison's head?

A causal loop cannot exist.

A passing loop exists at the site.