Crustal Foundering

A macro shot of the damaged end of a saguaro arm where the blackened protective material has cracked, showing the lighter material underneath, taken in McDowell Sonoran Preserve in Scottsdale, Arizona on May 12, 2024. Originals: _Z729316.NEF to _Z729361.NEF

When I saw the damaged end of a saguaro arm where the blackened protective material had cracked, showing the lighter material underneath, I was reminded of lava lakes in Hawaii and Iceland. The lava on the surface cools and hardens and can sink into the less dense molten lava via a process called crustal foundering. It took me a while to find the time to bring my macro setup on a day when there was little wind, and even then it took me a few attempts as the breeze was often stronger than predicted.

The National Park Service has a description on their page about Hawai’i Volcanoes National Park.

πŸ“·: Nikon Z 7II | Nikon 105mm macro
πŸ—“οΈ: May 12, 2024

New Horizons

Our dog Bear stands near saguaros on the Axle Grease Trail in McDowell Sonoran Preserve in Scottsdale, Arizona on January 16, 2024. Original: _ZFC9192.NEF

During my time off I’ve loved taking Bear to trails I normally avoid as they are crowded on the weekends, stepping aside to let people past is the most common way he steps on something painful. Here we’re taking a water break at the junction of the Axle Grease and Rock Tank trails, it was a Tuesday so we only encountered a few people. I’m not sure he cares but I enjoy seeing him discover new places.

πŸ“·: Nikon Z fc | Nikon 16-50 DX
πŸ—“οΈ: January 16, 2024

Terror of the Saguaro

A green lynx spider eats a leaf-footed cactus bug on a saguaro in Scottsdale, Arizona on March 18, 2022. Originals: _ZFC4811.NEF to _ZFC4842.NEF

A green lynx spider sets to devouring the insides of a leaf-footed cactus bug. It never left a small region high in one of our saguaros, it would spin a thread and attach it to a spine, giving it freedom to leap after prey without fear of falling. I watched its reign of terror over the course of several months, it had no qualms about going after insects larger than itself, until one day I found its lifeless body swaying in the breeze, hanging from a large spine.

πŸ“·: Nikon Z fc | Nikon 105mm macro
πŸ—“οΈ: March 18, 2022