British entrepreneur Sir Richard Branson has organized a huge benefit concert for Friday near the Tienditas Bridge crossing, on the Colombian side of the border at Cúcuta, to raise money for Venezuela.
Venezuela Aid Live, he says, was organised at the request of Mr. Guaidó and another opposition leader, Leopoldo López.
About 250,000 people are expected at a gig which organizers hope will raise about $100m (£77m) to buy food and medicine for Venezuelans.
Not to be outdone, the Venezuelan government has erected a stage on its side of the crossing which, according to AFP news agency, is just 300 meters away.