From Portland , Oregon take I- 205 north to exit 22 (The Dalles). You are now on I-84 stay on this until the Mosier exit , about 5 miles past Hood River. Take the Mosier exit #69. Take a left at stop sign , go back towards Hood River. You will see a sign for Koberg Beach State Park , take the next exit , it will say rest area. The jump heights for this massive rock go from 2ft to 150ft. The only problem with going higher is that you have to go around the rock and the farther around and higher up you go , the longer the swim back to shore. A perfect solution for this is a jet ski.