Castella is a small town on Interstate 5, with the bigger towns of Dunsmuir and Mt. Shasta on the other side of I-5. Literally the only businesses in Castella are a fuel station with a convenience store, a post office and a couple of campgrounds/RV parks (as far as I could tell). Apart from these, there is the Castle Crags State Park. The crag formation is what you see in the pic above. For us, the most important part was the post office since we had sent our resupply food box there. Of course, the convenience store was exciting since it would have a variety of food and drink 🙂. A quick 12-mile hike in the morning got us close to Castella. Took the road to the State Park campground, as there were showers there. And they were free! Washed clothes too in the shower, since laundry was not an option. Dried them out on the camp gate. Then headed to the post office which was next to the fuel station & opened only at 11 am & shut at 3 pm. Th