#ThrowbackThursday#climbing in our local crag this day in 2020
@IngolfKuehn Beautiful rock and everything. Is this porphyry granite? (Porphyr)
@dbread Yes, it is porphyry.
QOTO: Question Others to Teach Ourselves An inclusive, Academic Freedom, instance All cultures welcome. Hate speech and harassment strictly forbidden.
@dbread Yes, it is porphyry.