Photographer and writer in Alaska. Field notes on landscape, science, and a changing North. Lots of stuff here: http://lwpetersen.com/linkshttps://bsky.app/profile/leepetersen.bsky.socialhttps://bsky.app/profile/leepetersen.bsky.social/post/3mv44fq23nc2eOne of my favorite flowers is the Dryas octopetala, or eight-petal mountain avens. It's highly susceptible to changes in temperature and moisture, and its pollen, found in bog sediments, is used as an indicator of past cold periods. #alaska #wildflowers #bloomscrolling09 Sep 2026 17:57 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mv44fq23nc2ehttps://bsky.app/profile/leepetersen.bsky.social/post/3mv3zylcidk2iAurora from the Granite Tors Trail in late March of 2015. #alaska #auroraborealis #northernlights #nightsky09 Sep 2026 17:14 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mv3zylcidk2ihttps://bsky.app/profile/leepetersen.bsky.social/post/3muznpyqqg22rSet out Sunday evening to photograph mushrooms and ended up chasing light across the tors instead. The Asgard Tor in full fall color, Granite Tors Trail. Story and more photos in my Field Notes Substack: https://lwpetersen.substack.com/p/impromptu-evening-at-granite-tors #alaska #hiking #fallColors #granitetors08 Sep 2026 18:29 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3muznpyqqg22rhttps://bsky.app/profile/leepetersen.bsky.social/post/3muwyhkkmoc2pCowboy's handkerchief (Hygrophorus eburneus) along the UAF Trail System. I've been out shooting fungi a bit over the last couple of weeks. Check out some of the photos from Saturday in my latest Field Notes: https://lwpetersen.substack.com/p/barely-taller-than-the-moss #alaska #fungi #mushrooms #macro07 Sep 2026 17:04 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3muwyhkkmoc2phttps://bsky.app/profile/leepetersen.bsky.social/post/3muujichr5c2qCotton candy sunset in Miller Creek near the terminus of the Canwell Glacier in the Alaska Range. #alaska #sunset #hiking06 Sep 2026 17:30 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3muujichr5c2qhttps://bsky.app/profile/leepetersen.bsky.social/post/3musvt7ex4s26The rain is slowing down. Let's go find mushrooms.06 Sep 2026 02:06 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3musvt7ex4s26https://bsky.app/profile/leepetersen.bsky.social/post/3musjcxrpq22pA red rainbow at sunset near the Donnelly Creek Campground, south of Delta Junction. Mainly the longer wavelengths remain when the sun passes through so much atmosphere low on the horizon. #sunset #alaska #atmosphericoptics05 Sep 2026 22:22 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3musjcxrpq22phttps://bsky.app/profile/leepetersen.bsky.social/post/3musbuud2js2sDescending to College Creek in the Alaska Range. The delineation of rough texture on the valley side displays the glacier trimline, the historic elevation of the surface of College Glacier that once filled this valley, whose terminus is now 4 miles up the valley. #alaska #mountains #glacier #hiking05 Sep 2026 20:09 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3musbuud2js2shttps://bsky.app/profile/leepetersen.bsky.social/post/3mus5icccx22lHiking in the Hoodoos region in the Alaska Range with views of the Gulkana and College Glaciers. #hiking #alaska #summer #glacier05 Sep 2026 18:50 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mus5icccx22lhttps://bsky.app/profile/leepetersen.bsky.social/post/3mup7tbhbgc2mA large active moulin on the Canwell Glacier in the eastern Alaska Range. #alaska #hiking #glacier04 Sep 2026 14:54 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mup7tbhbgc2mhttps://bsky.app/profile/leepetersen.bsky.social/post/3mumucvxjks2kA water-filled moulin on the Gakona Glacier in the Alaska Range. #alaska #hiking #glacier03 Sep 2026 16:23 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mumucvxjks2khttps://bsky.app/profile/leepetersen.bsky.social/post/3mukgadkg522fAnderson Falls emptying into Prince William Sound near Valdez, Alaska. It's one of those places that are so beautiful that the weather doesn't seem to matter. #alaska #waterfall #valdez02 Sep 2026 17:05 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mukgadkg522fhttps://bsky.app/profile/leepetersen.bsky.social/post/3muhvcv4wyk2bMay–Aug from my 2027 Alaska Wall Calendar (by calendar month, not season): sunset at Anchor Point, a hoary marmot near Wickersham Dome, seracs on the Gulkana Glacier, and evening light at Hatcher Pass. Stories + ordering: https://lwpetersen.substack.com/p/2027-alaska-wall-calendar #alaska #hiking #glacier #wildlife01 Sep 2026 16:57 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3muhvcv4wyk2bhttps://bsky.app/profile/leepetersen.bsky.social/post/3muffrr354s2aA small arch in the seracs of the Gabriel Icefall on the Gulkana Glacier, eastern Alaska Range. Photos and story in my Field Notes From the North: https://lwpetersen.substack.com/p/incredible-day-on-the-gulkana #alaska #glacier #hiking31 Aug 2026 17:14 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3muffrr354s2ahttps://bsky.app/profile/leepetersen.bsky.social/post/3mudgvwfz3c2pI went out to take mushroom photos today, but only managed to get two before the rain started falling pretty hard. Baeospora myosura (conifercone cap) and Tricholoma virgatum. All my recent photos: photos.lwpetersen.com/Recent-Photos #alaska #fairbanks #mushrooms #fungi #macro30 Aug 2026 22:29 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mudgvwfz3c2phttps://bsky.app/profile/leepetersen.bsky.social/post/3mucyi6p33s2fJan-Apr from my 2027 Alaska Wall Calendar (by calendar month, not season). Spire Cove, autumn color in muskeg in the Alaska Range, a boulder on College Glacier, and aurora at Angel Rocks. Stories+ordering: https://lwpetersen.substack.com/p/2027-alaska-wall-calendar #alaska #hiking #auroraborealis #glacier30 Aug 2026 18:11 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mucyi6p33s2fhttps://bsky.app/profile/leepetersen.bsky.social/post/3mub75pw7k22vMy 2027 Alaska Wall Calendar is done and ready for ordering. Check out the stories behind all the photos or order the calendar here: https://lwpetersen.substack.com/p/2027-alaska-wall-calendar #alaska #glacier #wildlife #landscape #hiking30 Aug 2026 01:05 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mub75pw7k22vhttps://bsky.app/profile/leepetersen.bsky.social/post/3muansk7fp22lAurora filling the sky in early October from Fairbanks, Alaska. It's been a pretty cloudy start to the aurora season so far this year; hopefully we get some clear skies soon! https://photos.lwpetersen.com/Galleries/Alaska-Photos/Aurora-Borealis #alaska #auroraborealis29 Aug 2026 19:54 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3muansk7fp22lhttps://bsky.app/profile/leepetersen.bsky.social/post/3mu5mkchqc22rOut in the Gabriel Icefall of the Gulkana Glacier in the Eastern Alaska Range. More photos and story with some repeat photography showing glacier changes: lwpetersen.substack.com/p/gulkana-ice #alaska #glacier #climatechange #hiking28 Aug 2026 14:54 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mu5mkchqc22rhttps://bsky.app/profile/leepetersen.bsky.social/post/3mu3hvgknts2iAnchor Point, Alaska sunset from late June. Photos and story from the trip in my Field Notes from the North: https://lwpetersen.substack.com/p/homer-sunsets-eagles-and-flowers #sunset #alaska #homer #beach27 Aug 2026 18:25 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mu3hvgknts2ihttps://bsky.app/profile/leepetersen.bsky.social/post/3mu3fqqubj22jI’ve been trying to find time to photograph mushrooms before the cold sets in, but work keeps eating the days. I found a few yellow fieldcaps (Bolbitius titubans) while on a walk with a friend over the weekend. https://photos.lwpetersen.com/Macro/Macro-Portfolio27 Aug 2026 17:47 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mu3fqqubj22jhttps://bsky.app/profile/leepetersen.bsky.social/post/3mu3czjfsak2kOn the steep climb toward Mt. Margaret in Denali National Park on Sunday night. Read about it in my Substack: https://lwpetersen.substack.com/p/evening-on-mt-margaret #alaska #hiking #denali #mountains27 Aug 2026 16:58 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mu3czjfsak2khttps://bsky.app/profile/leepetersen.bsky.social/post/3mtytg6gu322fApetalous catchfly (Silene uralensis). Photographed on Mt. Margaret in Denali National Park on Sunday. Info in my Alaska Wildflower Guide: https://www.lwpetersen.com/alaska-wildflowers/silene-uralensis-apetalous-catchfly/ #alaska #bloomscrolling #wildflowers #hiking #denali26 Aug 2026 17:13 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mtytg6gu322fhttps://bsky.app/profile/leepetersen.bsky.social/post/3mtxvm6q5322dMy latest post on Field Notes from the North. Late-season flowers, caribou, and tundra. Fall is coming fast in the Alaska Interior. Read it here: https://lwpetersen.substack.com/p/evening-on-mt-margaret #alaska #hiking #denali26 Aug 2026 08:20 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mtxvm6q5322dhttps://bsky.app/profile/leepetersen.bsky.social/post/3mtxn3cnye22dTonight’s sunset over Ballaine Lake in Fairbanks, Alaska. #alaska #fairbanks #sunset26 Aug 2026 05:47 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mtxn3cnye22dhttps://bsky.app/profile/leepetersen.bsky.social/post/3mtwex6pfbc2gCassidy on the way to Mt. Prindle in the White Mountains National Recreation Area in early August. Read about the trip in my Field Notes from the North: https://lwpetersen.substack.com/p/late-hike-on-mt-prindle #alaska #hiking #summer25 Aug 2026 17:49 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mtwex6pfbc2ghttps://bsky.app/profile/leepetersen.bsky.social/post/3mttxq46b2c2wFive bull caribou on Mt. Margaret last night in Denali National Park. I've got a lot of photos to share from this quick trip, but I'll have to wait til tonight to edit and post them, as I'm dealing with some camera issues at the moment. #alaska #wildlife #denali #hiking #caribou24 Aug 2026 18:47 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mttxq46b2c2whttps://bsky.app/profile/leepetersen.bsky.social/post/3mtrdob2l3c2iCompilation of video from my trip with @Cassidy Meyer to the glacier caves on the Canwell moraine in early June. Story and more photos on my Substack: https://lwpetersen.substack.com/p/three-days-in-the-alaska-range-day #alaska #glacier #hiking #mountains23 Aug 2026 17:43 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mtrdob2l3c2ihttps://bsky.app/profile/leepetersen.bsky.social/post/3mtopzwgp522kA small icefall over the Loket Tributary to the Black Rapids Glacier in the eastern Alaska Range, taken in early spring. https://www.lwpetersen.com/alaska-information/black-rapids-glacier/ #alaska #mountains #glacier22 Aug 2026 16:46 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mtopzwgp522khttps://bsky.app/profile/leepetersen.bsky.social/post/3mtnrrhm3sk2cSunset over Ballaine Lake in Fairbanks, Alaska. https://photos.lwpetersen.com/Portfolio-Images22 Aug 2026 07:45 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mtnrrhm3sk2c