A 16-year-old German girl’s yearlong adventure to join the ranks of ISIS came to an end when she was captured in Mosul.

Linda Wenzel, from the town of Pulsnitz near Dresden, was among 20 jihadists rounded up last week after the erstwhile capital of their self-declared caliphate fell, the Daily Mail reported.

The fearsome fräulein was found in a tunnel along with members of the terror group’s dreaded all-female police force, some of whom were wearing suicide vests.

Linda began her odyssey a year ago when she posed as her mother, Catherine, and boarded a flight from Frankfurt to Turkey, en route to Syria, after falling in love with a Muslim she had met online.

Among those captured were women from Russia, Turkey, Canada and Chechnya – all of whom were collared during recent military mopping-up operations, the paper reported.

German authorities said they were examining images of the girl to positively ID her, but the Die Welt newspaper, citing security officials, reported that she is the missing schoolgirl.

Linda, who was radicalized in Germany, changed her name to Mariam and had posted images of herself on Facebook wearing a headscarf.

“There are new findings in the criminal investigation that are being tested,” chief prosecutor Lorenz Haase said. “When she is clearly identified, the investigation will be resumed.”

German intelligence officials had suspected Linda of plotting a crime against the state when she fled abroad and joined ISIS offshoot groups before being smuggled into Iraq.

She forged a letter pretending to be her mom, withdrew money from a bank and bought a ticket to Istanbul. By the time her mother realized she was missing, the teen had already disappeared.

“When she did not come back and then I found out she had never even been there, I called the police,” her mother said a year ago.

“In her room they found a print of a plane ticket to Istanbul under the mattress. I was shocked. My daughter has never stolen or lied about anything before,” she said.

“I am devastated by the fact that she was apparently completely brainwashed and persuaded to leave the country by someone and that she managed to hide it from me.”

Iraqi troops recently ended three years of ISIS rule in Mosul and the terror group is facing growing pressure in Raqqa, its de facto capital in Syria.