In this video I show a great H0 model railway layout on a scale of 1 to 87, which I also presented in the Märklin Magazin (issues 4/2023 and 4/2023). It is based on three-wire K-tracks from Märklin and is located in a nearly nine-meter-long basement room in Mühldorf, Upper Bavaria. The theme of the layout is a Swiss mountain line on the Gotthard north ramp, along with the stations at Erstfeld and Wassen. The layout has its main playing level at the station of Erstfeld at 92 cm. Wassen station is at a height of 125 cm and the upper shadow station at 150 cm. Below the playing level, there are two large shadow stations at a level of 70 cm. The system has been lovingly built by Thomas M. since 1998/99 and is always being detailed. Later, his son Michael also got involved in building the layout and playing with the model railway. Most track curves have the great circle radii of 424.6 and 553.9 mm. In addition, points with a radius of 902.4 mm are almost exclusively installed. In the first part of the video I show many details of the system. From minute 7 the following locomotives and trains can be seen in sequence: Re 460, Austrian Crocodile, Re 465, Danish Litra E, E 71, RAe TEE II and ICE 4. My video consists of the following sections, which can also be easily selected directly in the timeline or in the video description text: 00:00 Overview of Erstfeld station with track plan 00:24 Construction site for the north portal of the Gotthard Base Tunnel 01:00 System overview 01:20 Wassen station with track plan 01:37 Museum depot in Erstfeld with track plan 02:06 H0 platforms and H0m narrow-gauge railway 02:30 Campi castle ruins with wedding 02:53 Depot Erstfeld, turntable, transfer table 03:31 Wassen train station and play heights of the layout 03:51 Track plan and Wassen station 04:45 Middle Meienreuss Bridge 05:34 Room height approx. 2.45 meters 06:02 Heating pipes disguised as clouds 07:00 RE 460 Märklin 34619 and rolling country road 08:03 Track plan hidden yard 1 under mountains 08:52 Shadow stations 2 and 3 with track plan 09:50 ÖBB Crocodile 1189.04 Märklin 39089 12:54 mountain shadow station at a height of 1.5 meters 13:19 Re 465 Märklin 39609 with passenger train 15:35 Impressions from the platform in Erstfeld 16:15 Danish Litra E Märklin 39491 DSB E 991 17:32 E71 26 Märklin 39771 with freight train 20:59 RAe TEE Gottardo Märklin 39540 22:18 ICE 4 in Switzerland Märklin 39714, 43724, 43725 23:47 Farewell The track plans of the layout are best seen in the video at 3m53s Level 1 and higher Gotthard north ramp with Wassen station and shadow station above 8m26s Level 0 Erstfeld station with depot and shadow station under Wassen station 9m44s Level -1 shadow yards below Erstfeld and on the other side And here are the track plans in the download area of Märklin Magazin: https://www.maerklin.de/fileadmin/media/journal/maerklin-magazin/2023/Gleisplaene_Maerklin-Magazin_04-2023.pdf