It is lovely at Kanayama Megaliths. Chika-san visited on the spring cross-quarter date (half-angle date of the Kanayama solar calendar) , April 22, 2017. In addition to photographing solar phenomena, she took these pictures of spring in Iwaya Valley.
The first three photos are the sakura and pink peach blossoms growing by the side of the road. Notice how petals drift down in the breeze and form a pink river on the ground.
The fourth photo is that of Monotropastrum globosum or Monotropastrum humile (銀龍草: ギンリョウソウ ginryousou）. Monotropastrum humile is a species of myco-heterotrophic plant of the family Ericaceae, distributed throughout eastern Asia. It lacks chlorophyll and is therefore unable to photosynthesis as most plants do; instead it gains sugars and nutrients from mycorrhizal fungi. (Wikipedia). Monotropastrum humile (D.Don) H.Hara is the accepted name of a species in the genus Monotropastrum (family Ericaceae). You can read about it here.