San Baltazar Guelavila is a small town on the eastern side of the Valles Centrales region of Oaxaca, Mexico in the district of Tlacolula. It is in these valley highlands, because of their fertile, limestone soils, that espadín has been cultivated for over 100 years alongside other sustaining crops. Don Gregorio Martinez grows his espadín at an elevation of 5,500 feet surrounded by diverse agriculture such as tropical fruits and citrus. The proliferation of fruits and vegetables being grown in the area lend their naturally occurring yeasts to the wild fermentation process and give this mezcal it's distinctive sparkling aromatics and rich flavor.