Think Maya ruins in Mexico and you probably go straight to world-famous Chichen Itza or Teotihuacán, Tulum or Palenque. Don't get us wrong – these magnificent places are all worth a visit when in Mexico. But if you’re after something different (and equally amazing), if you prefer less-to-no crowds and more adventure, allow us to introduce you to the hidden ruins of Calakmul. If you haven’t heard of them there’s a good reason: this World Heritage-listed Maya site is set deep into the tropical jungles of Campeche state, hours drive from the busy traveller hubs of Tulum, Playa del Carmen and Merida (not even Google Maps knows how to get there!).