Featured in Domain Arrivals · 2026-08-15
Corridor, an offline trail map built for thru-hikers
A free iPhone app that combines topographic maps, elevation profiles, water reports, waypoint comments, and trail navigation without an account or signal.
Why it surfacedCorridor answers the practical questions hikers face between resupply points: how far to the next water source, whether it is running, what an alternate costs, and whether they have wandered off-trail. It currently covers Te Araroa, the Great Divide Trail, and the Pacific Crest Trail, with maps designed to work in airplane mode.
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The Two-Tonne Temperature Problem
August 15’s newborn domains include a live-aboard hydrogen airship with a two-tonne lift problem, a Japanese toolbox that explains its assumptions, an advisory-by-advisory Hawaiʻi hurricane archive, and a wedding-gift game about ungrateful poultry.
This is one of 1,000 discoveries in the 2026-08-15 Domain Arrivals issue.