Das Sonnentor

From Author Wars - https://authorwars.com/books/das-sonnentor-3221926.html

Overview:

Title: Das Sonnentor
Author: Sascha Vennemann
Year: 2019
Type: Short Fiction
Series: Maddrax Zyklus 17: Parallelwelt
Number in Series: 516

Variant Titles:

2023. The Sun Gate