No special access issues
The best is to go with a car from Zakros village using the road leading to the small church of Agios Giorgos. The road starts right at the end of the village. From the main road leading to Xerokambos turn right on the very steep concrete road leading up among olive trees, the dirt road starts after a few hundred meters. The dirt road is mostly in a good condition even for a smaller car. Park close to the church, but let there free room for turning big farmer´s cars. From this parking lot follow a path up to the canyon which you see above, you can follow small red dots sprayed on the rocks. There is a gate at the entrance, please don´t forget to close it. The path is about 15 minutes to reach the big cave, then 3 minutes to the left part of Katalava crag where are routes.