This is a fairly weird one but something that only twigged for me a few weeks ago when looking through old RCT files and It finally clicked.
Its a fairly well known curiosity that in 2002 before Thope Park settled on Colossus they looked at putting in a B&M launched coaster on the site. A plan that can be seen here
[pic]
Source with other images and ditched plans:
https://www.southparks.co.uk/history/the-drawing-board/alternative-plans/
Now the design in that image is very rough (I mean look at that cobra roll).
The second part of this story comes from John Wardley. Way back in the early 2000s John put up a zip file containing a number of roller coaster designs buillt in RCT1 on his website. At the time these were actually password protected but someone cracked that password and the designs were shared widely amongst the RCT community at the time.
Until last week it never twigged that one of these designs was actually a mock up of the ride shown in the plans above which clears up some of the weirdness in that image.
[pic]
Obviously its still a rough approximation of the ride layout but it shows the hill over the water was to be a zero-g-roll and the oddly twisted hills in the plans are actually corkscrews. While not an amazing looking ride by any account really it would have been an interesting alternative to the Colossus we have now.