Indian grinding-hole (bedrock mortar) in stray boulder : 無料・フリー素材/写真
Indian grinding-hole (bedrock mortar) in stray boulder / Pete Tillman
| ライセンス | クリエイティブ・コモンズ 表示-継承 2.1 |
|---|---|
| 説明 | I've previously looked at this enigmatic boulder, a stray in a field of ice-age sand. It's a metamorphic rk, but not one I've seen anywhere around here. Shrug, random debris from the Franciscan melange?But we've had rain, which filled the little pool you see, a ±1-ft dia hole. The Ancients liked their mortars in isolated, treeless places, to spot intruders? Breeze and view? Who knows?There's the start to a second mortar near this, but not obvious on this photo. Location is near the Mar Vista trailhead on the coastal trail S from New San Simeon.Oh, and the bear-shaped shadow is me, standing on my head (virtually), so we could actually see this little feature! |
| 撮影日 | 2021-11-12 16:42:59 |
| 撮影者 | Pete Tillman , USA |
| 撮影地 | San Simeon, California, United States 地図 |
| カメラ | iPhone SE (1st generation) , Apple |
| 露出 | 0.017 sec (1/60) |
| 開放F値 | f/2.2 |
| 焦点距離 | 35 deg 36' 34.74" N |