I have observed rima Petavius several times .
One exellant seeing night, 2011. 9[september] .14 …. , I ,d found out with my 8″ refractor at x 340 the three tuna-fish like convex hills on the middle of the 80 km long rima road,,,
I was then feel very happy because maybe this discovery was the first since amateur lunar observing history.
I have made this artistic conception today, a Lunar horizon landscape viewed from on one of the the three [Tuna-fish like hills] which located on the bottom of 4 km wide, 80 km long magnificent rill.
I dont know how many billions of years have passed on this geological creation,formation, or evollution forces- sequences.
8 inches refractor x 340, homade equatorial
date; 2011. sep. 14
location; at backyard home in South korea
media; graphite pencils , a white A4 printer paper
tranceparency; worst, 0.5-1/10
seeing ; perfect, 10/10