Caldera Book 3: Return To Yellowstone

Months after an ancient rage virus erupts from the depths of Yellowstone, survivors find themselves scattered. Clinging to life in clusters, hiding from the infected and scavenging from the remnants of humanity, life has evolved to mere survival.
The United States government has attempted to reestablish itself in the last safe place on earth…an offshore flotilla of naval vessels. The last of the CDC’s disease researchers work tirelessly to find a cure, but the virus keeps mutating. They need the original strain from Yellowstone.
Only one man knows the park well enough to escort the military to the source of the virus. Daniel Hatcher is called upon once more to face the threat of Yellowstone. Follow along as they try to survive ground zero.