As you're approaching Mt Harrison, seen in the distance, you will see the entrance to Twin Lakes Campground. You will turn to the left.
At the paystation you will find a number of informational signs and posters.
The daily campsite fee was $8 and this is still correct as of January 2022. These campsites are not reserveable. Remember this is an equine facility.
Note that certified weed free feed and straw is required here.