Around this
time of year, I always used to hope for a huge snowfall. Not just because it
would mean school would be cancelled, but because I needed a lot of snow for my
favourite winter activity: building snow tunnels.
Of course,
at the time, I didn’t call them snow tunnels – I called them igloos. This is a
misnomer, because real igloos are constructed using blocks of ice (or packed
snow), whereas what I made involved tunnelling out a mound of snow. Since we
Canadians live in igloos year-round, it’s an important distinction to make. For
the purposes of this blog, I’ll periodically call them igloos for simplicity’s
sake.
Anyway, the
first time I made an igloo, it was a big family project. My parents, brother
and I all worked really hard on it. To this day, I couldn’t say for certain how
big that igloo was, because I was rather small at the time – in my memory, it
was at least five-feet tall with a diameter of ten feet. Big enough for my
entire family comfortably fit in, at least according to me. In reality, it was
probably significantly smaller.
After that
initial construction, my brother and I got creative. We built a second, much
smaller, igloo and attached the two with a tunnel. My poor mother nearly got
stuck in that tunnel – it turns out adults are bigger than kids, but we were so
proud of our accomplishment that we wouldn’t let her alone until she’d crawled
through it.
In future
years, my brother and I became experts at tunnelling through the snow. This was,
in part, for safety reasons. Around this time, there was a great deal of
concern about kids getting injured in collapsing snow tunnels. One of my
friends (you know who you are, and I know you’re reading this) was only allowed
to play in our tunnels with us as long as she kept her head outside. My brother
and I felt this was unnecessary because none of our igloos ever collapsed
(unless we jumped on them or they melted) – we believe that the any that did
were poorly constructed.
Here are
the guidelines we used for making our tunnels:
-
First, only use snow that packs decently. Light,
fluffy snow won’t hold together well enough to form a solid structure. It is a
good idea, once your pile of snow is ready to be tunnelled, to ensure it s
sufficiently packed. To do this, carefully (so as not to leave footprints) climb
to the top of the pile and roll down the hill. If the pile isn’t too high, it
is also possible to jump lengthwise onto the top before rolling down. Repeat
this until the hill is sufficiently packed on all sides and feel free to
continue for as long as it’s fun.
-
Second, when tunnelling, make sure the walls are
the correct thickness. If they are too thick, they could collapse from the
weight. If they are too thin, they won’t be strong enough to hold up the
structure. The ideal thickness is right before the point when you can see
sunlight through the walls. The best way to achieve this is to tunnel until you
can see a bit of light – then pack some snow over top of that and use that
location as a guide for the continued tunnelling process. It is especially important
to focus on getting the roof the right thickness, since that is the most likely
part to cave in if there is a structural problem. In that event, a thinner roof
is less dangerous.
-
Third, the don’ts. Don’t freeze your igloo – the
process of freezing it will make the structure weaker and, in the event of a
collapse, more dangerous. Don’t fill the walls with windows and doors – one entrance
is enough, maybe one or two tunnels if you have a complex structure. And
whatever you do, don’t jump on top of it – especially if there is another
person inside.
Using these guidelines, my
brother and I crafted many interesting snow tunnels. From a triplex of
interconnected igloos to an igloo fort with a tunnelled outer wall, we had a
great time every year we got enough snow (right up into out twenties). It
helped that we had a large driveway – big enough to hold 6-8 card or 3
(friendly) dogsled teams. The snow needed to be shovelled anyway, so why not put
it all in one place?
So, if you’re
stretched for things to do this winter, and you happen to get a lot of snow,
try tunnelling. It’s a great deal of fun – just make sure you stay safe.
Disclaimer: To the best of my knowledge, that driveway has
never had a dogsled team parked in it – and no, all Canadians don’t actually
live in igloos.
Also, make sure you check out my wife's blog and her life coaching website.
If there's any subject you'd like to see me ramble on about, feel free to leave a comment asking me to do so.