Hierve el Agua is a captivating natural wonder in Oaxaca, Mexico, featuring petrified waterfalls and mineral-rich springs forming natural pools perfect for swimming. Reaching the site typically involves a colectivo or rental car from Oaxaca City or Mitla, followed by a short walk on uneven terrain, making it moderately accessible for most visitors; comfortable walking shoes are highly recommended. While solo visits offer flexibility, many opt for guided tours from Oaxaca City for convenience and to combine it with other regional attractions. The site is generally open year-round, with the dry season (November-May) offering ideal conditions, though the rainy season brings lush greenery. Expect an entrance fee of around 50-70 MXN plus a small community fee, while transportation costs vary widely from budget-friendly colectivos (approx. 100-140 MXN one-way from Oaxaca City) to all-inclusive tours (300-800 MXN). A typical visit to the site itself lasts 2-4 hours, but plan for a full day including travel. Don't forget swimwear, sunscreen, a hat, and plenty of water, and consider arriving early to avoid crowds.