Ruben
Google
Be aware, it is a tricky dirt road to get there, especially to the volcano cone! We got stuck in the volcano sand taking an inroads path between the church ruins and the volcano! Please make sure you have traction on your wheels and a spare tire, since the rocks on the gravel road are quite sharp. In total from the y-junction following nuevo s. juan, count around 45 minutes to get to either place (so 3 hours of driving from that point to see both attractions), better go early and hike from the church ruins, as it took us all day including short lunch stop from morelia just having 2 short visits (from 8 am to 7.30 pm)
The church below the lava is impressive. Unfortunately, there is litter all over the place and people drink and smoke and yell around the area. Also people climb up the church structure, which must be fun but not really good for the the 70 years old building that gets no maintenance.
The mountain climb is not so hard, but be ready to slip especially while descending again!