The memorial, circled in this photo taken from my village, is in the Aminadav Forest.
I have hiked up to it several times. It is a quiet place of solitude.
It was built in 1966 in memory of President John F. Kennedy.
Please see the close-up picture of Yad Kennedy in my post of last November.
One tree is $18, probably because 18 is the numerical equivalent of the Hebrew letters chet and yod, which together spell "chai," meaning LIFE.
I promise to go up and visit your tree if you plant one.