Solve the crossword puzzle below to find the actual coordinates. I used greyish squares in the grid to save ink. If you prefer more traditional black squares, click here. And click here for a JPEG picture of the clues.

|
ACROSS |
| 1 |
Right-hand page |
| 6 |
Elemental unit |
| 10 |
Pub orders |
| 14 |
Spelling of television |
| 15 |
Lucy Lawless role |
| 16 |
Often-carved gem |
| 17 |
Witch's end? |
| 18 |
Actress Barbara |
| 19 |
Assistant |
| 20 |
Movie stand-in |
| 22 |
California mountains |
| 24 |
Saddle parts |
| 27 |
"Quickly!" |
| 31 |
People like us |
| 36 |
Southern California school (abbr.) |
| 37 |
_____-jongg |
| 38 |
Plant in the cashew family |
| 39 |
Destroy |
| 40 |
Being somewhere else |
| 43 |
Great pyramid locale |
| 44 |
Assists in crime |
| 46 |
Is able to |
| 47 |
The two |
| 48 |
Less than whole |
| 51 |
Armenia and Latvia, once (abbr.) |
| 52 |
More impressive |
|
| 54 |
Meeting record |
| 58 |
Study again |
| 63 |
13ths and 15ths |
| 64 |
Group of quail |
| 67 |
Sheriff's ID |
| 68 |
Copenhagener, e.g. |
| 69 |
Opera solo |
| 70 |
Bottled water brand |
| 71 |
Paramedics, e.g. (abbr.) |
| 72 |
Artificial light source |
| 73 |
Suspicious |
| |
|
DOWN |
| 1 |
Time-based competition |
| 2 |
Actor Holliman |
| 3 |
Nebula in Taurus |
| 4 |
Soy product |
| 5 |
"_____ of spaghetti" |
| 6 |
Wood chopper |
| 7 |
Actor Danson |
| 8 |
"I'll be right there" |
| 9 |
Nearby town |
| 10 |
Slightly open |
| 11 |
Villain's hideout |
| 12 |
Icelandic classic |
| 13 |
Observes |
| 21 |
Established opinion |
|
| 23 |
Some computer keys |
| 25 |
Lunch, e.g. |
| 26 |
Hudson River tribe member |
| 27 |
Related to hearing |
| 28 |
Type of diver |
| 29 |
Zovylan, e.g. |
| 30 |
Start to mime? |
| 32 |
Grant and Laurie |
| 33 |
Gives off |
| 34 |
Occam's _____ |
| 35 |
Strikers' replacements |
| 41 |
Minstrel |
| 42 |
Conclude |
| 45 |
Omen |
| 49 |
Like some chiefs |
| 50 |
"Candid _____" |
| 53 |
Dissenter |
| 54 |
Support (with with) |
| 55 |
Dutch cheese |
| 56 |
Portable shelter |
| 57 |
Applies |
| 59 |
Speak wildly |
| 60 |
Singer Brickell |
| 61 |
Petri dish gel |
| 62 |
Turn down |
| 65 |
Vigor's partner |
| 66 |
Small dog's bark |
|
If you think you've figured out the coordinates, you can check them with certitude:
You can also see who else has solved the puzzle. Note: You can remain anonymous if you want to; incorrect guesses are always anonymous. (Puzzle makers, you can create your own certitude links here.)
The cache is a hanging preform tube.
Congratulations to the first certified solver and first finder, hidegoseek.
On 7/6/2022, this puzzle was
(Thanks to waterfan5 for letting me know.)