Originally Posted by Schenker
...as long as you stay away from the ledge hole or the extreme rr bank it's no IV or V. just my opinion tho
Going into a feature doesn't make a rapid a higher class, it's the rapid as a whole which is the definition or thing/noun receiving the class.
What I saw, at 22K, was a Class IV rapid with 2 high consequence features that can come into play at different water levels (Ledge Hole & Cheesegrater). It was the only Class IV I saw from Lee's to Pearce at that level (Crystal was washed out & Class III). This includes Pearce Ferry Rapid... which has mellowed out in recent times apparently and looked III to III+ from the scout.
Also, in my humble opinion... the left line at Lava is less challenging, but more consequential (consequence: flirting with the Heart of the Ledge Hole), while the right line is more challenging, but less consequential (consequence: the right side of the Ledge Hole is more of a wave & the Cheesegrater was basically out of play the 22K). The challenging aspect refers to how easy it is when you're left and you hit the entrance correctly and how it's somewhat tough to manage the right side of the Ledge Hole and the big laterals coming off the right-hand shore when going right.