Police units have already moved across the coast of Croatia, popular with the more than 400,000 holidaying Britons a year.
Maps have been discovered showing how to avoid the Macedonia-Greece chaos
The new migrant route would open up from Montenegro through the sunny Dalmatian coast – a getaway hotspot during the summer.
The country’s own tourism minister admitted they have “no plan” to deal with the growing threat of migrants flooding their resorts.
Tourism makes up a large part of what drives the Croatia’s economy and boosts small businesses, especially in the spring and summer months ahead.
Already 658,068 refugees and migrants have passed through Croatia
A refugee route through the southern corridor would be disastrous for our tourism
Popular resorts could be swamped with migrants
Critics have hit out at the government’s refusal to acknowledge the possible threat that migrants could plunge the tourist resort into chaos.
Experts point to a warning from the deputy Prime Minister over the possible opening of the southern refugee route through Dalmatia as a major part of the last election campaign platform.
The country’s own tourism minister admitted they have “no plan” to deal with the growing threat
He said: “If we need to use the army to facilitate the procedure and continue our humane approach, then we will do it, but only as a help.”
The new migrant route would open up from Montenegro through the sunny Dalmatian coast
The British Foreign Office has so far warned of “disruption or delays” due to growing migrant chaos.
The latest breaking point has emerged after more than 15,000 migrants were been left stranded on the Greek side of the border with Macedonia.
This week, Macedonia announced it had closed its doors “completely” to migrants.
Slovenia, Serbia, Croatia and Macedonia have all since tried to close their borders to new migrants.