This summer we visited the island of Kauai in Hawaii, where we enjoyed Kauai‘s high cliffs, deep valleys, and water. For six million years, “high annual rainfall has eroded deep valleys in the central mountains, carving out canyons with many scenic waterfalls.”
Above is a sunrise from our condo, where the rising sun paints the beach and trees with a red glow.
Continue reading Kauai
Seeing a dragonfly on a tree, I wondered if it would stay long enough to photograph it. I ran inside for a camera and telephoto lens. The dragonfly was still there. I approached slowly, taking photos along the way, in case the dragonfly flew away.
Above is my first good photo, the dragonfly seen through a wing as a veil. The dragonfly did fly away several times, and it returned to different spots on the same branch. I thought I saw it moving its mouth after it landed, so perhaps the dragonfly was catching flying bugs. Continue reading Stalking a Dragonfly
At Zion National Park, we followed the Riverside Walk where the Zion Canyon narrows and the trail stops as the Virgin River flows between rock walls.
Seen in early June, the Virgin River stays within its channel. The steep canyon walls indicate that the rock is hard, but this river doesn’t look like it would cut through hard rock. But appearances can be deceiving. The Park Service warns “During a flash flood, the water level rises quickly, within minutes or even seconds. A flash flood can rush down a canyon in a wall of water 12 feet high or more.”
Continue reading Zion’s Riverside Walk
In northern California, where the August 2017 solar eclipse covered up to 75% of the sun, an oak tree served as a pinhole camera, a “natural optical phenomenon that occurs when an image of a scene at the other side of a screen (or for instance a wall) is projected through a small hole in that screen as a reversed and inverted image (left to right and upside down) on a surface opposite to the opening”.
Above, in the shadow of branches, the many crescents show the sun in eclipse. Tiny gaps between the oak leaves form pinhole cameras that project the sun’s image onto pavers.
Continue reading Eclipse through an Oak-Tree Camera
Completed in 1966, the Glen Canyon Dam holds back the Colorado River to flood Glen Canyon, forming Lake Powell just upstream from Horseshoe Bend. Looking at the height of white bathtub ring, the water level doesn’t look down much, but a park ranger told me that the reservoir had risen to 55% full after the past wet winter.
Lake Powell loses water to evaporation and leakage; I wondered if the water loss is significant. Running the numbers, Lake Powell loses enough water to supply over half (57%) the people in the San Francisco Bay Area with water — every year. After weathering years of drought, the water loss from Lake Powell is very significant.
Continue reading Glen Canyon Dam
After walking through Antelope Canyon on our southwest parks road trip, we drove to Zion National Park, where we crossed the Virgin River to hike to Emerald Pools. In early June, the Virgin River is quiet, so it’s hard to imagine that this river carved the Zion Canyon through the red rock. The peak in the photo is 1,400 feet above the river.
Continue reading Zion’s Emerald Pools
We saw Horseshoe Bend our first evening in Page, but we stopped in Page to see Upper Antelope Canyon. Flash floods, especially during the monsoon season, carve slot canyons in the pink Navajo sandstone, and the colors are exquisite.
Antelope Canyon is on Navajo land; people who want to see it must go on a tour authorized by the Navajo Nation. Above, people look up to see the sun-lit rock. The tour guides in orange shirts do a great job of managing the flow of many people through the slot canyon so we can all get our photos.
Continue reading Upper Antelope Canyon