(https://www.farrail.com/pages/touren-engl/Steam-in-china-2017-Sandaoling-last+final.php) Sandaoling coal mine. The last resort of Chinese standard gauge steam power. Steam has endured here even to this day. Though soon, it no longer will. (https://www.flickr.com/photos/dave-hill/15838840582/in/photostream/lightbox/) But through the magic of TSW, this unique modern steam operation could be relived in a virtual world. A short route for TSW that has it all - steam, diesel, coal, beautiful scenery and most of all, intense gradients. That is the reason for the "challenge" in the title - operating the steam locomotives on gradients as steep as these and on track as bad as those would be an insane challenge on higher difficulties. A video of steam operation inside the open cut mine part of the Sandaoling mine: The content package would include: -Sandaoling route; open cut mine and the other mine branch that is serviced by steam (for extra lenght and variety) -Various scenarios in various weather and time conditions ranging from crew transporting and open cut ore runs to banking a train of full hoppers and assisting in track maintainace or rerailing a derailed locomotive. -LS class 2-8-2 steam locomotives and tenders in various weathered and non-weathered variations -a diesel-electric locomotive (which class?) -Sandaoling tipper wagons (specialised unique tipper cars, open cut mine operation), standard Chinese hopper cars (other branch line operation), a worker transport boxcar, and possibly other rail equipment such as speeders. (https://www.farrail.com/pages/touren-engl/Steam-in-china-2017-Sandaoling-last+final.php) Thanks for reading. Check out my other TSW route suggestion: https://forums.dovetailgames.com/threads/tsw-return-to-arlberg-innsbruck-bludenz-1920s-1930s.5316/ - Return To Arlberg - Innsbruck to Bludenz 1920s-30s.