If you have Disney+ or know some one who does, watch the last episode of "Welcome to Earth", Beyond Fear, S1:E6, staring, vlogger, actor, rapper, Will Smith. (NatGeo)

At 24:00 minutes, Will and another explorer are somewhere in Iceland about to start climbing an "Old World" tree and white water between them. Purely fascinating! (Conversation & narration make no mention of the columns of "rock/tree material"). #ewaranon #devilstower