For that matter you won't find corners either. Muskeg, moose, and mosquitoes are the order of the day. If you don't plan well in advance, you may not know where you are, you may not have what you need, you may not like what you must eat, and you may not have the help you require. All of these factors must be taken into account before you proceed into the field. In each provincial or territorial jurisdiction in Canada some form of archaeological permit or licence is required.
Archaeological sites are non-renewable resources.
Excavation, where we like it or not, results in their destruction. The permitting systems have been put in place in order to ensure that these resources are excavated for good reasons and that the information they contain is preserved through proper, accessible reports. They also see to the conservation and long-term storage of the artifacts, thereby providing access to the site information long after a particular researcher has done with it. It's not difficult to image that anything bureaucratic would involve quite a few questions, some of which require serious thought to answer. So as not to keep you in the dark, have a look at a current permit application form from the Northwest Territories.