Plus ultra is a Latin phrase and the national motto of Spain. A reversal of the original phrase non plus ultra, said to have been inscribed as a warning on the Pillars of Hercules at the Strait of Gibraltar, it has metaphorical suggestions of taking risks and striving for excellence.
What does the Plvs Vltra flag mean?
“further beyond
The columns on either side of the shield are meant to symbolize the Pillars of Hercules which are at the Strait of Gibraltar. There is a Latin phrase on the red ribbon which winds around the two pillars, which reads PLVS VLTRA (those Vs are stand-ins for Us, as is typical in Latin) and which means “further beyond.”