Whitney Portal Campground is located in the Inyo National Forest. It is the access point for anyone to hike / climb Mount Whitney. The campground itself has may RV and tent sites, but reserve plenty in advance as it fills up quick. If you are planning on hiking from the portal they do have one night only campsites for the hikers just outside the parking area at the portal. Just make sure you get a parking pass from the Forest Service office in Lone Pine. On the Trail there are three distinct places to camp. Lone Pine Lake is 2.4 mile is and is a nice unimproved camp area with a beautiful lake. Outpost camp is about another 1.5 miles up and is in a grassy meadow with a stream, also unimproved. The last camp area before summitting is Trail camp. It is 6 miles in from the portal, there is a small lake for a water source (use a filter). This is above tree line and the ground is hard with granite rock, so a tent wont stake. We used rocks instead and tied off with guide lines. This whole area, from the portal campground to the summit is amazing. The portal also has a small store and cafe. Food is awesome, Highly recommend.