In article et,
"Steven P. McNicoll" wrote:

"BTB" wrote in message
news:smV6g.4324$_c1.3146@fed1read05...

Did my BFR yesterday and while going over the local sectional, I noticed
something and asked the instructor about it.

It was a dashed blank line, labelled 'underground pipeline'.

Now I have to ask - why if it is underground, is it on the chart ? What
is the possible value of it being there ?


If it goes through a forest it will be cleared of trees. If it's in snow
country it will probably be free of snow during the winter as the product
being piped is warm. The pipeline is out of sight but it's presence can be
quite visible.

It could also be a hint that slow and low aircraft (i.e. pipeline patrol)
could be found along that route.