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Four Tall Ones Multi-cache

Hidden : 2/6/2003
Difficulty:
3.5 out of 5
Terrain:
1.5 out of 5

Size: Size:   regular (regular)

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Geocache Description:


To search for this cache you will need your GPSr and a good sighting compass, which is capable of giving a reading to 1 or 2 degrees. Accuracy is important because there are long projections involved in the following description.

Go to Waypoint 1 given by the above coordinates (N45 12.016 W075 43.254). Look around and find the tallest man made objects. They are arranged in a straight line. Access to the objects is prohibited. Therefore, using a sighting compass and your GPSr determine the position of the northernmost one by triangulation. Make sure you are well away from objects which can influence your compass reading such as your car, hydro lines and even your GPSr. Also, determine the bearing (relative to TRUE north) of the line formed by the four tall ones. To do so, you must make use of the magnetic variation.

Magnetic variation is the number of degrees that the compass needle points away from true north in a particular area. It can usually be found on maps, and your GPSr has an approximation for it. However, this is an excellent chance to measure the magnetic variation yourself. To do so, find a position (A) somewhere where the four tall ones are in a line with your position. Do the same from the opposite direction at position (B). Mark these two positions and use your GPSr to determine the TRUE bearing between these two positions. The difference between a MAGNETIC compass bearing and the derived GPSr TRUE bearing line is the magnetic variation.

Now mark Waypoint 2 at 9.238 km along the bearing line from the northernmost of these four objects. Waypoint 3 is 9.477 km from Waypoint 2 on a line perpendicular to the bearing line.

Where you end up at Waypoint 3 will depend on the accuracy of the surveying exercise that you have just done. So, you may have to hunt around a bit for the green & blue sign described in the next paragraph.

Near Waypoint 3 is a large green and blue sign with white lettering. Very close to this sign are 2 green signs with white lettering. Below these 2 signs is a single green sign which has a number with white lettering. This number has a digital root of 5.

Now find another sign (with a black number) some distance away that has a number which is 56 greater than the one you just found. How to do this should be obvious. Subtract 0.030 minutes from the north coordinates of the black number sign and add 0.060 minutes to the west coordinates of the black numbered sign to yield the coordinates of the cache. (In spite of what one of the logs says, this sign with black numbers is there!) A trailhead is located across the road from this sign.

The cache is a lock-n-lock. It is off the ground, hidden in the crotch of a small tree.

NOTE: Winter Accessible. The trail is relatively dry

Please do not include spoilers in your logs. Logs with spoilers will be deleted immediately. If you believe there are any problems with the cache setup, please advise me privately by e-mail so that I may fix them if necessary.

Triangulation can be performed by the method described in my DOUBLE CROSS cache (GC364C).

Additional Hints (Decrypt)

[puzzle]Bs pbhefr, vg pna'g or gung rnfl! Gurer ner sbhe cbffvoyr jvqryl frcnengrq ybpngvbaf sbe Jnlcbvag 3. Lbh'yy whfg unir gb svther bhg juvpu bar vf zbfg yvxryl gur pbeerpg bar. [location]Gurer vf n ovt byq qrnq ovepu gerr fgnaqvat nobhg 20 zrgref sebz gur pnpur.

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)