(Roy)
>>Anybody want to run LiDAR to see which of 2 peaks with same
highest contour belongs on Maine P1K list?   (Old Turk vs Record Hill)

	TLDR: I believe the nationalmap.gov viewer shows a
	735 meter contour on Old Turk, and a 736 meter
	contour on Record Hill, making Record the winner.
	This work needs to be double checked (hopefully
	with the actual LiDAR points) before PB & LOJ are
	changed to make Record Hill the winner. Details below.


1. Coverage
	https://www.coast.noaa.gov/inventory/
	shows LiDAR coverage in this part of Maine.
	In addition the national map 
	3DEP Elevation - Auto contours 
	have "wiggles" typical of LiDAR contours.
	They also properly map large flat areas for
	wind turbine foundations found south of 
	Record Hill.

2. nationalmap viewer procedure
	https://apps.nationalmap.gov/viewer/
	Navigate to Old Turk
	Use Layer List icon to enable this layer
	  	3DEP Elevation - Auto contours
	Zoom in to Level 16, the last level where
	the default
		USGS National Map 
	basemap is visible.
	I believe the LiDAR contours are always
	in meters. We see
		Highest LiDAR index contour ~= 2300' = 701m
		Next contour above this ~= 2360' = 719m
	I believe this shows:
		LiDAR index contour      = 700m
		LiDAR contour above this = 720m

	Note that we can't use the profile tool to
	help us, as it uses old non-LiDAR elevations.

	Place the cursor on the 700m contour and
	zoom in to Level 17 and back to 16 a few times.
	Do the same for the 720m contour.

	I believe this establishes the following for zoom
	level 17:
		LiDAR index contour      = 700m
		LiDAR contour above this = 710m
		LiDAR contour above this = 720m
		Highest LiDAR contour    = 730m
 
	Zoom in to level 18. Grab the highest index
	contour (725m) and drag the map and inch or so.
	Repeat about 10 times.
	You will note that sometimes there
	are four contours above the Index contour,
	and sometimes there are two. The highest
	contour always has the shame shape.

	When the dust settles I think we show that
	for zoom level 18: 
		LiDAR index contour      = 725m
		contour interval is either 2.5m or 5m
		Highest LiDAR contour    = 735m

	Grab the 735m contour, zoom in to
	level 19, and drag the map around 10 times
	or so.

	There are three possible contour intervals -
	1m, 2m, and 2.5m. On the 1m interval the
	735m contour is dark, and there is no
	736m contour inside it.



	Navigate to Record Hill.
	Level 17 is 700m Index, 10m contours,
	730m highest.  
		LiDAR index contour      = 700m
		LiDAR contour above this = 710m
		LiDAR contour above this = 720m
		Highest LiDAR contour    = 730m
	Level 18 can provide a 725m Index contour
	with 5m intervals. You may have to drag
	a the map few times to get this. 

	Grab the 735m contour, zoom in to
	level 19, and drag the map around 10 times
	or so.

	You may run across a map with the
	735m contour gone, and a smaller
	one inside. This is a 730 Index,
	2 meter interval, and 736m highest contour.

3. Supporting files are at
	http://www.cohp.org/writers/AndyMartin/prominence/Turk_vs_Record/
	With names showing Zoom, Highest Index contour, and Interval
	Old Turk 735m:
http://www.cohp.org/writers/AndyMartin/prominence/Turk_vs_Record/Turk_19_730I_1mInterval.jpg
	Record Hill 736m:
http://www.cohp.org/writers/AndyMartin/prominence/Turk_vs_Record/Record_19_730Index_2m_interval.jpg


4. Comments
	Either I'm missing a simpler way to do this,
	of the viewer badly needs:
		1. Labeling of the contours
		2. User selection of the various contour intervals