An arrieros or a muleteer walks next to his mule during harvest in a blue agave plantation in Tequila, Jalisco, Mexico, April 11, 2018. Picture taken on April 11, 2018. REUTERS/Carlos Jasso 

An arrieros or a muleteer walks with his mule loaded with hearts of blue agave during harvest at a plantation in Tequila, Jalisco, Mexico, April 11, 2018. Picture taken on April 11, 2018. REUTERS/Carlos Jasso 

Arrieros or muleteers drive their mules for a harvest in a blue agave plantation in Tequila, Jalisco, Mexico, April 11, 2018. REUTERS/Carlos Jasso SEARCH "JASSO TEQUILA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Arrieros or muleteers load hearts of blue agave onto a mule during a harvest on a blue agave plantation in Tequila, Jalisco, Mexico, April 11, 2018. REUTERS/Carlos Jasso SEARCH "JASSO TEQUILA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Jose Luis Flores, an arriero or muleteer drives his mule loaded with blue agave hearts, during a harvest on a plantation in Tequila, Jalisco, Mexico, April 13, 2018. REUTERS/Carlos Jasso SEARCH "JASSO TEQUILA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Jose Luis Flores, an arriero or muleteer rests at his house after a harvest in Tequila, Jalisco, Mexico, April 13, 2018. "I helped my dad for 20 years and I love it," Flores said. "No one can replace us, not even a machine. My mules can get past any cliff or difficult path." He hopes to pass down his trade to his four children. "I think I'm going to buy more mules. This is a family business now," he said. REUTERS/Carlos Jasso SEARCH "JASSO TEQUILA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Jose Luis Flores, an arriero or muleteer drives his mule loaded with blue agave hearts, during a harvest on a plantation in Tequila, Jalisco, Mexico, April 13, 2018. REUTERS/Carlos Jasso SEARCH "JASSO TEQUILA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

60th Annual Grammy Awards – Show – New York, U.S., 28/01/2018 – Aida Cuevas accepts the Grammy for Regional Mexican Music Album (Including Tejano) for "Arriero Somos Versiones Acusticas" during the pre-telecast. REUTERS/Lucas Jackson 

60th Annual Grammy Awards – Show – New York, U.S., 28/01/2018 – Aida Cuevas accepts the Grammy for Regional Mexican Music Album (Including Tejano) for "Arriero Somos Versiones Acusticas" during the pre-telecast. REUTERS/Lucas Jackson 

Mariachi band Los Arrieros arrives at the 54th annual Grammy Awards in Los Angeles, California, February 12, 2012. REUTERS/Danny Moloshok (UNITED STATES) (GRAMMYS-ARRIVALS) 

Angel Maria Villar (L), president of the Royal Spanish Football Federation, talks to Josue (R), son of South American Football Confederation (CONMEBOL) President Nicolas Leoz, at a lunch for guests of the CONMEBOL at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

Colombia's former national soccer team coach Francisco Maturana leaves a lunch for guests of the South American Football Confederation (CONMEBOL) at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER HEADSHOT) 

Brazilian Football Confederation President Ricardo Teixeira (L) greets Mohamed bin Hammam, president of the Asian Football Federation, at a lunch for guests of the South American Football Confederation (CONMEBOL) at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

Colombia's former national soccer team coach Francisco Maturana (R) and Mohamed bin Hammam (L), president of the Asian Football Federation, shake hands as they leave a lunch for guests of the South American Football Confederation (CONMEBOL) at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

Former Paraguayan goalkeeper Jose Luis Chilavert (L) greets UEFA President Michel Platini after arriving at a lunch for guests of the South American Football Confederation (CONMEBOL) at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

FIFA President Sepp Blatter (R) dances to the beat of Latin American music with Silvana Fretes, wife of the president of the Paraguayan Interior soccer union (UFI), as they leave a lunch for guests of the South American Football Confederation (CONMEBOL) at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

FIFA President Sepp Blatter dances to the beat of Latin American music as he leaves a lunch for guests of the South American Football Confederation (CONMEBOL) at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

Former Paraguayan goalkeeper Jose Luis Chilavert (L) greets FIFA President Sepp Blatter (C) and South American Football Confederation (CONMEBOL) President Nicolas Leoz (R) after arriving at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

South American Football Confederation (CONMEBOL) President Nicolas Leoz (R) and Mohamed bin Hammam, president of the Asian Football Federation, shake hands as they leave a lunch for guests of the CONMEBOL at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

FIFA President Sepp Blatter (L), South American Football Confederation (CONMEBOL) President Nicolas Leoz (C) and Mohamed bin Hammam, president of the Asian Football Confederation, talk at a lunch for guests of the CONMEBOL at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

UEFA President Michel Platini (L) speaks with Ramon Jesurun, president of Colombia's soccer league governing body Dimayor, at a lunch for guests of the South American Football Confederation (CONMEBOL) at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

FIFA President Sepp Blatter (C) and South American Football Confederation (CONMEBOL) President Nicolas Leoz (L) arrive at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

Brazilian Football Confederation President Ricardo Teixeira (L) greets Mohamed bin Hammam, president of the Asian Football Federation, at a lunch for guests of the South American Football Confederation (CONMEBOL) at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

FIFA President Sepp Blatter (C) dances to the beat of Latin American music as he leaves a lunch for guests of the South American Football Confederation (CONMEBOL) at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

Mohamed bin Hammam, president of the Asian Football Federation, puts on his glasses at a lunch for guests of the CONMEBOL at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno(PARAGUAY - Tags: SPORT SOCCER HEADSHOT) 

South American Football Confederation (CONMEBOL) President Nicolas Leoz (L) speaks with Mohamed bin Hammam, president of the Asian Football Federation, at a lunch for guests of the CONMEBOL at El Arriero ranch in Ypacarai, 37 km from Asuncion April 30, 2011. REUTERS/Jorge Adorno (PARAGUAY - Tags: SPORT SOCCER) 

Nicolas Leoz (L), president of the South American Soccer Confederation, talks to Angel Maria Villar, president of the Royal Spanish Football Federation, at El Arriero ranch in Ypacarai January 28, 2009. The inauguration of the first museum of South American soccer on the outskirts of the Paraguayan capital will take place tomorrow. REUTERS/Jorge Adorno (PARAGUAY) 

Nicolas Leoz (R), president of the South American Soccer Confederation, greets Angel Maria Villar, president of the Royal Spanish Football Federation, at El Arriero ranch in Ypacarai January 28, 2009. The inauguration of the first museum of South American soccer on the outskirts of the Paraguayan capital will take place tomorrow. REUTERS/Jorge Adorno (PARAGUAY) 

Flags of the countries which participated in the CONMEBOL (South American Football Federation) are seen at El Arriero ranch in Ypacarai January 28, 2009. The inauguration of the first museum of South American soccer on the outskirts of the Paraguayan capital will be held tomorrow. REUTERS/Jorge Adorno (PARAGUAY) 

Former Peruvian soccer player Teofilo Cubillass waves next to president of the South American Soccer Confederation, Nicolas Leoz, at El Arriero ranch in Ypacarai January 28, 2009. The inauguration of the first museum of South American soccer on the outskirts of the Paraguayan capital will be held tomorrow. REUTERS/Jorge Adorno (PARAGUAY) 

Nicolas Leoz (L), president of the South American Soccer Confederation, greets former Peruvian soccer player Teofilo Cubillas at El Arriero ranch in Ypacarai January 28, 2009. The inauguration of the first museum of South American soccer on the outskirts of the Paraguayan capital will take place tomorrow. REUTERS/Jorge Adorno (PARAGUAY) 

Angel Maria Villar, president of the Royal Spanish Football Federation, smiles at El Arriero ranch in Ypacarai January 28, 2009. Villar will attend the inauguration of the first museum of South American soccer on the outskirts of the Paraguayan capital. REUTERS/Jorge Adorno (PARAGUAY) 

Angel Maria Villar (C), president of the Royal Spanish Football Federation, stands next to Nicolas Leoz (L), president of the South American Football Confederation, at EL Arriero ranch in Ypacarai January 28, 2009. Villar will attend the inauguration of the first museum of South American soccer on the outskirts of the Paraguayan capital. REUTERS/Jorge Adorno (PARAGUAY) 

Colombian farmers called "Arrieros" simulate a machete fight in Medellin May 19, 2007. Arrieros from all over the country travel to Medellin each year, where they display their mules and way of life. REUTERS/Fredy Amariles (COLOMBIA) 

Colombian "Arriera" Fidelina Velez walks with her mule at a street in Medellin May 19, 2007. Arrieros from all over the country travel to Medellin each year, where they display their mules and way of life. REUTERS/Fredy Amariles (COLOMBIA) 

Colombian farmers called "Arrieros" walk with their mules along a street in Medellin May 19, 2007. Arrieros from all over the country travel to Medellin each year, where they display their mules and way of life. REUTERS/Fredy Amariles (COLOMBIA) 

Colombian farmers called "Arrieros" walk with their mules along a street in Medellin May 19, 2007. Arrieros from all over the country travel to Medellin each year, where they display their mules and way of life. REUTERS/Fredy Amariles (COLOMBIA) 

Colombian farmers called "Arrieros" walk with their mules along a street in Medellin May 19, 2007. Arrieros from all over the country travel to Medellin each year, where they display their mules and way of life. REUTERS/Fredy Amariles (COLOMBIA) 

A Colombian child walks among mules in El Retiro, Colombia May 18, 2007. Every year Colombian farmers called "Arrieros" walk to Medellin, where they put on display their mules and way of life. REUTERS/Fredy Amariles (COLOMBIA) 

A Colombian farmer called an "Arriero" stands with his mules in El Retiro May 18, 2007. Arrieros from all over the country travel to Medellin each year, where they display their mules and way of life. REUTERS/Fredy Amariles (COLOMBIA) 

Colombian farmers called "Arrieros" walk with their mules along a street in El Retiro May 18, 2007. Arrieros from all over the country travel to Medellin each year, where they put on display their mules and way of life. REUTERS/Fredy Amariles (COLOMBIA) 

Colombian farmers called "Arrieros" walk with their mules along a street in El Retiro May 18, 2007. Arrieros from all over the country travel to Medellin each year, where they put on display their mules and way of life.REUTERS/Fredy Amariles (COLOMBIA)