Wave travels inland until it hits a landmass equal to the wave height - its called a standing wave. Its a wave caused by displacement, rather than the usual subduction wave tsunami, which is a subsurface wave - standing waves travel across the surface of the ocean equal in height to the mass of the material that displaced the water.
See Latuya Bay AK
Saw something about the 500 foot (?) wave it generated. Crazy stuff. But, “we” can stop climate change. With enough money. NOT!
Another name for standing wave is stationary, they don’t travel.