Driving from Arenal Volcano to La Fortuna, we passed a lot of fancy, built-up hot spring resorts, but we were on the lookout for the stream that fed those resorts. Near the huge Tabacon resort, we saw cars parked along the road over a small bridge. We parked, hiked down under the bridge, and came upon this AMAZING hot spring river. It felt like sitting in a hot tub in a remote jungle, with the current acting like natural hot-tub jets. There were only a few others there, we happily would have spent the rest of our trip lounging in this hot river!