One of the benefits of cruising the li river, or any river for that matter where you can get out of the cabin, is the way the landscape just slides on by.
Trains typically have closed, dirty windows, travel too fast and often have ugly track-side infrastructure elements that get in the way. In cars you have to stop repeatedly if you want to avoid the same problems. But a boat on the river can be quite a serene form of travel. One downside, of course, is that it keeps on moving so the opportunities for do-overs are small.
Today's photo is of a cave high above the li river in one of the karst limestone cliffs. Clearly this section of the rock was weaker than the surrounding material and has similarly been chemically eroded over geologic time.
I don't have an overview photo of this cave so I can't tell how high above the river it is but there seems to be some sort of railing at the base of the opening. Clearly there's no cliff path here so I'm left wondering if there was some other access to this cave and the railing was there to prevent people accidentally slipping out of the cave and into the river below.
