A real-world travel fiction located in the 1980s follows the two best friends Zac and Martin to the East in search of mystical secrets, parallel worlds, and themselves. They descend into the caves of the Cappadocia, into the underworld of the dead on the Solomon Islands and they climb to the Glass City in Tibet. The journey is dangerous because it is necessary to survive encounters with wild tribes, opium smugglers, sail the Indian Ocean and climb to the Himalayas. They are not searching just an adventure, but also the knowledge.
Warning: You will learn something new!
https://www.amazon.com/dp/B07DFTC86J