River Dragon's Song (Dragons on Mars Book 3) by Honey Phillips

A hidden river. An impossible discovery. A dragon who's been waiting in the darkness. When Morgan is separated from her team, she doesn't expect a single wrong step to plunge her deep beneath the surface of Mars. Lost in a vast underground world, she discovers the impossible—an ancient river flowing through the darkness and evidence that she's not alone. Korrak has been wandering the hidden waterways alone since he awakened, listening for a song that never comes. Until her. The pretty female is stubborn, determined, and far too tempting. Korrak knows he should keep his distance, but every instinct urges him closer. The longer Morgan remains trapped beneath the surface, the harder it becomes to resist the dragon who has quietly claimed her heart. Finding a way home should be her first priority. If only she could convince herself to leave him behind. A sweet and spicy sci-fi romance featuring a stranded heroine, a lonely dragon, only one cave, hidden secrets, and a guaranteed happily ever after.

Adult • Science Fiction/Romance • Fantasy/Science Fantasy • Science Fiction/Colonization • Romance • Science Fiction