A Problem About Mountains
Knowledge and experience about mountains is surprisingly personal and individual.
Those who belong to mountaineering clubs or have veteran friends naturally build a toolkit of practical wisdom—insights like "the weather on that mountain tends to deteriorate in the afternoon during this season" or "that route is more physically demanding than it looks on a map." These are things you won't find in textbooks. Meanwhile, hikers without such connections may have access to information, but rarely have someone to think through decisions tailored to their own fitness level and experience.
Of course, many solo hikers manage their own risks carefully. Solo hiking itself isn't the problem. And in an age where information is available through YouTube, hiking apps, and social media, I don't mean to oversimplify by saying "accidents happen because of ignorance."
However, I believe that "I wanted to ask someone, but had no one to ask" is a common experience, especially among those new to hiking. Information exists. But finding someone who can specifically address the question "Is it safe for me to go to this mountain today?" is not easy.
About YAMATOMO
I developed YAMATOMO to help make this problem even a little smaller.
Honestly, I don't believe a single app can eliminate mountain accidents. Nor do I think an app can replace the kind of trust that develops between experienced and novice hikers over years.
What YAMATOMO can provide is a "first point of contact" for people who share an interest in the same mountain.
Every mountain has its own Base Camp—a permanent community space where hikers can exchange real-time conditions, ask questions, and connect. "How was that route?" "The weather seems to be getting worse this afternoon." Creating a space where these casual conversations can happen naturally—that is what YAMATOMO's Base Camp is about.
From there, you might become regular hiking partners, or it might be a one-time conversation. That's not for an app to decide—it's something that naturally develops between people.
But I believe that simply having an entry point for connections that didn't exist before can subtly change how you engage with the mountains. A place where someone who would have had to make uncertain decisions alone can reach out. Just that alone can quietly transform the quality of the hiking experience.
YAMATOMO isn't aiming for a grand revolution. It's about creating just a few more points of connection among people who enjoy the mountains. And I believe that accumulation will, as a result, lead to a safer and richer mountain culture.
Yuhei Yamauchi