Throw-in Violation: Where's the Spot

[normrefct]

Hello fellow zebras. New to the forum and enjoy the information everyone shares. It really does help.

Can you throw your 2 cents in on this scenario:

Inbound thrower-in throws the ball high enough to hit the roof in the gym over middle center court from the end line.
Where do you inbound ball... End Line or Mid-court? Thanks.