"In Jerusalem around 2,000 years ago a Jew named Yehohanan, who was in his mid-twenties, committed a crime against Roman authority. The nature of his transgression has been lost to time, but his punishment is known — he was crucified." Source: Times of Israel (2012)
The skeletal remains of Yehohanan apparently constitute the only archaeological evidence of Roman crucifixion. After his death, his body was apparently removed to a burial cave and his bones later collected in an ossuary , a simple stone box inscribed with his name.
"Inside the box, archaeologists found a heel bone with an iron stake driven through it, indicating that the occupant of the ossuary had been nailed to a cross."