If you search for - GR trails in France - you will find there are well over 35,000 miles of long distance trails criss crossing the country and connecting to similar trails all across Europe. We got to hike just a couple miles on the GR78 both in a small village and through a forest. We were not planning to hike today, but we arrived at the Gouffre d Esparros three hours before the next opening and decided to take a walk. The gouffre is a underground cavern entered from the top rather than the side like a cave. It was beautiful with tons of Crystal formations and flows of mineral deposits. No pictures were allowed so you'll just have to believe me. It was a nice treat to escape the heat that has settled into the area along with high humidity. Our hike was short and hot. I felt more sweaty than on our very long Lax Bleu trek. The most interesting part was the colorful blazes used to mark the trail and then reading about the trail system after. It looks like more extreme heat and humidity the next couple days, so short walks will probably be the norm. Check out my current location on the map. and you can at least see where the cave is located.