During a Mass in Boxmeer, in Holland, in the year 1400, the species of wine was transformed into Blood and bubbled out of the chalice, splashing onto the corporal.
As soon as the priest, terrorized at the sight, asked God to forgive his doubts, the Blood stopped bubbling out of the chalice.
The Blood that had fallen on the corporal coagulated into a lump the size of a walnut.
Even today one can see the Blood, which it has not changed at all over time.
The Eucharistic Miracle of Boxmeer took place in the church of Saints Peter and Paul in 1400.
Father Arnoldus Groen was celebrating Mass and immediately after having consecrated the Eucharistic species, doubted the Real Presence of the Lord in the consecrated bread and wine.
Without warning, the species of the wine, almost like it was boiling, began bubbling out of the chalice onto the corporal.
The wine was changed into Blood and coagulated in a great lump.
The reliquary of the corporal and the Blood is preserved in this day and the anniversary of the miracle is celebrated with an annual solemn procession.
There are many documents that describe the miracle, as well as stone tablets