The 1,125-acre Caledonia State Park is in Adams and Franklin counties, midway between Chambersburg and Gettysburg along the Lincoln Highway, US 30.

The park is nestled within South Mountain, the northern terminus of the well-known Blue Ridge Mountain of Maryland and Virginia. Within South Mountain there are four state parks and 84,000 acres of state forest land waiting to be explored and enjoyed. The soils on either side of South Mountain are ideal for fruit production, proven by the abundance of orchards in the surrounding area.

Caledonia State Park Campground

We chose to go camping here for our honeymoon.  The campground offered a lot of hiking trails and swimming.  Our campsite wasn't very well maintained as it had a lot of rocks throughout and didn't make for comfortable sleeping.  The fire ring to use for the evening to sit at wasn't well kept and we were afraid a fire wouldn't stay well in the ring. We didn't use the amenities that were offered as we mainly used the campground as a place to rest our heads and breakfast as we were doing a lot of touring of Gettysburg. 

Honeymoon July 1999

We enjoyed our stay here very much. The trails were very enjoyable and we hiked about 15 miles with sections of the Appalachian trail. Restrooms were very clean and park was beautiful, only negative comment would be how close sites are to each other. 

Great trails, clean facilities, somewhat tight campsites

Stayed here for the weekend and was Impressed with the cleanliness of the facilities.  We did not use the pool, only because it was so crowded.  
Bathrooms were very clean. The sites were pretty close together so you can hear everything your neighbors are doing and saying.  Friday was very calm but Saturday night there was a lot more noise, which is to be expected. 
The trails were nice and had different levels of difficulty.  They had firewood for sale at the entrance of the grounds which was very nice.  Overall a good experience. 

Nice and clean

Brought my 4 year old daughter and we had a great time exploring the many streams and trails. 

Nice place

Very nice campground with clean bathrooms and showers.  Nice creek for the kids to play on a hot day.  Great spot for kids.  Wish the pool was open!

Not sure about other sites- some sites appeared not to have tent sites and steep parking.  All the full look-up sites appeared very nice.

Staff was very friendly and helpful!

Beautiful campground near I-81

Very nice state park in a great location.  Lots of easy hikes available.
Good trout fishing nearby.  Although it wasn’t open when I was camping, this state park has a swimming pool at the main park are.

Nice sites on a great state park right of PA route 30

Well maintained park, very clean bathrooms and showers. Nice staff. T-Mobile service is spotty in many locations and comes and goes at times even when not moving (radio wave physics).  I've been here many times since 2013 initially with a 24-ft trailer until 2016, then a couple of times with a 33-ft Class A in 2021 and now my new Class B in 2022. It's always been the same good experience.

Very good camping 

This is a great park, with beautiful scenery, just incredibly crowded. And expect to be serenaded long into the evening by motorcycles racing up and down the highway nearby.

Great scenery very crowded

Hosack run loop.

Two nights the first weekend of November.  Site was in good condition.

Campground was very busy, nearly every site was booked.  Sites are very close to each other, there’s no privacy, and you can hear everyone and everything.

So. Many. Children.  If you’re looking to get out of the city for a quiet, relaxing  weekend, and do not have children of your own, look elsewhere.

RV and Child Central

This was a great trip for the most part.  Lots of neat things around.  We went to a winery and an ice cream place as well as did some other fun things.  There is a pool there and the area is fantastic.  As for the site, I took one of the last ones that was available in the full hookups.  Wouldn't book that site again for our unit.  It was on a slope and our sewage wouldn't drain correctly as it was uphill from the campsite.  That also caused issues when we went to clean our tank out upon leaving as we couldn't get it all out.  We then stopped at the dump station and that ended up being an issue too.  Not enough to keep us from not going back.  We will be there over the Fourth of July weekend.  Sites are not huge, however the bathhouse is new and nice and overall it was a great weekend!