Heat 4: Uncharted Territory
- Episode aired Oct 4, 2019
- 55m
![The Great Model Railway Challenge (2018)](https://m.media-amazon.com/images/M/MV5BNzQ1M2I5MDgtODVjOC00NzM4LThlNTgtMzFiNjU2ODE3MzYwXkEyXkFqcGdeQXVyMTUyNjc3NDQ4._V1_QL75_UX190_CR0,2,190,281_.jpg)
This week's three teams of modellers take a magical mystery train tour through a jungle action adventure, a historic flood in 1950s Zeeland and a quarry that reaches the centre of the Earth.This week's three teams of modellers take a magical mystery train tour through a jungle action adventure, a historic flood in 1950s Zeeland and a quarry that reaches the centre of the Earth.This week's three teams of modellers take a magical mystery train tour through a jungle action adventure, a historic flood in 1950s Zeeland and a quarry that reaches the centre of the Earth.