The Adventurer

A lone adventurer, walking in the middle of so-called paradise. Down beneath the slopes, across the waves, shielded by rocks. Who knows what lies afar of his standing point, probably new level of adventure, or something else..

I find there's something off with this artwork but with the reference I have, I still couldn't figure out something. Guidance will be deeply appreciated. Thank you in advance.
Ref: deeply inspired by a landscape picture of Kupang, Indonesia
Total time: +- 4 hours