The Hollow Log Journal
Zoo enrichment insights, wildlife habitat tips, and stories from the field — written by the team at IC WOOD.
12 posts
What Is a Crawl-Through Log? Everything Buyers Need to Know
Crawl-through logs show up in zoos, schools, playgrounds, and backyards — but what exactly are they, how are they made, and where do you actually buy a real one?
Natural Playground Tunnel Ideas: The Case for Real Wood
Planning a natural playground and considering a tunnel element? Here is why a real hollow log outperforms every other option — and how to choose the right one for your space.
Real Log Tunnels for Playgrounds: What to Know Before You Buy
Not all log tunnels are created equal. Here is what separates a real crawl-through log from a plastic imitation — and why it matters for kids, schools, and parks.
The World's Most Famous Hollow Logs: From Balch Park's Giant Sequoia to Modern Architecture
From a drive-through sequoia in the California mountains to a patented mechanical hollowing process that brings massive natural timber into modern public spaces — the story of the world's most famous hollow logs.
Investing in Nature: Why a Real Hollow Log Offers the Ultimate Long-Term Budget ROI for Public Parks
In accounting, a 'hollow log' is a fund that looks full on paper but conceals nothing of real value. In public parks procurement, the opposite is true — and the numbers prove it.
Red Panda Enrichment: Why the Hollow Log Is the Single Best Investment You Can Make
Red pandas are den-obligate, arboreal, and highly sensitive to environmental stress. A properly sized hollow log addresses all three of those realities at once. Here's what the research and our zoo partners tell us about getting it right.
The Inner Circle Wood Method: How IC WOOD Makes the Impossible Possible
For centuries, a truly hollow log — large enough for a person or animal to crawl through — was a gift of nature, not something you could manufacture. IC WOOD changed that. Here's how the patented Inner Circle Wood Method works, and why it matters.
How to Fix Cracks in Your Hollow Log or Tubular Round Lumber — The IC WOOD DIY Guide
Real wood cracks. Here are the two exact repair methods we use at IC WOOD — the wood dowel spline method for structural cracks, and the expanding foam method for surface checks — with step-by-step photos straight from our shop floor. Both methods apply to Hollow Logs and Tubular Round Lumber.
The Sensory Magic of Natural Play: What a Hollow Log Does That Plastic Never Can
There's something that happens when a child — or an adult — encounters a real hollow log for the first time. It's not just play. It's a full-body sensory experience that plastic equipment simply cannot replicate. Here's the science behind why it matters.