[DonH57]

I heard on the radio today Mira Mesa should be opening up soon but didn't state when. I suppose they back filled the sinkhole near the 3rd hole, the first par 4. Scary thing was the huge oak tree about 20 feet from it. It looked deep. Took 10 seconds for a rock to hit bottom.

[tophcfa]

Originally Posted by DonH57

I heard on the radio today Mira Mesa should be opening up soon but didn't state when. I suppose they back filled the sinkhole near the 3rd hole, the first par 4. Scary thing was the huge oak tree about 20 feet from it. It looked deep. Took 10 seconds for a rock to hit bottom.

Yikes, one of our favorite Executives relatively close to our home but haven’t played there since mid July and wasn’t aware of the large sink hole. Ten seconds for a rock to hit bottom is very deep. Hopefully that’s not going to be a long term issue?

[bagboy]

Re-opening Sunday, August 25th.

[Rainger99]

Originally Posted by DonH57

I heard on the radio today Mira Mesa should be opening up soon but didn't state when. I suppose they back filled the sinkhole near the 3rd hole, the first par 4. Scary thing was the huge oak tree about 20 feet from it. It looked deep. Took 10 seconds for a rock to hit bottom.

I couldn’t find any info about it online. Do you have any links?

Almost like a blackout.

[Rainger99]

Originally Posted by DonH57

I heard on the radio today Mira Mesa should be opening up soon but didn't state when. I suppose they back filled the sinkhole near the 3rd hole, the first par 4. Scary thing was the huge oak tree about 20 feet from it. It looked deep. Took 10 seconds for a rock to hit bottom.

I couldn’t find any info about it online. Do you have any links?

Almost like a blackout.

[UpNorth]

Originally Posted by DonH57

I heard on the radio today Mira Mesa should be opening up soon but didn't state when. I suppose they back filled the sinkhole near the 3rd hole, the first par 4. Scary thing was the huge oak tree about 20 feet from it. It looked deep. Took 10 seconds for a rock to hit bottom.

10 seconds to hit bottom? That converts to 1600 ft deep. Where did you hear that one?

[Keefelane66]

Originally Posted by UpNorth

10 seconds to hit bottom? That converts to 1600 ft deep. Where did you hear that one?

An object dropped will travel 4.9m or 16 feet in one second so wishfully thinking the whole may be 160 feet deep.

[LeRoySmith]

Originally Posted by Keefelane66

An object dropped will travel 4.9m or 16 feet in one second so wishfully thinking the whole may be 160 feet deep.

I think this is the formula and result

d = 1/2 * 9.8 * (10 seconds)^2
d = 1/2 * 9.8 * 100
d = 490 meter

490 meters is 1607.61 feets


Its been a long time since I used that so I could be mis-recalling.

[Marathon Man]

Originally Posted by LeRoySmith

I think this is the formula and result

d = 1/2 * 9.8 * (10 seconds)^2
d = 1/2 * 9.8 * 100
d = 490 meter

490 meters is 1607.61 feets


Its been a long time since I used that so I could be mis-recalling.

Looks like your memory is good.

Now use S=4.9t2 put the time in this eqn and you will the depth s.

But of course, the rock was likely hitting lots of things on the way down, so...

[LeRoySmith]

Originally Posted by Marathon Man

Looks like your memory is good.

Now use S=4.9t2 put the time in this eqn and you will the depth s.

But of course, the rock was likely hitting lots of things on the way down, so...

Same formula, am I missing something?

[DonH57]

Very likely a miscalculation on my part due to excitement. I only know when the rock went down it took a while to hit. I could only get so close to it using enough sense not to go past the ropes. I'm only curious how much concrete had to be used to back fill it. It's certain the villages didn't advertise it's there.

[LeRoySmith]

Originally Posted by DonH57

Very likely a miscalculation on my part due to excitement. I only know when the rock went down it took a while to hit. I could only get so close to it using enough sense not to go past the ropes. I'm only curious how much concrete had to be used to back fill it. It's certain the villages didn't advertise it's there.

I'd be ok getting close to the edge of a funnel shaped hole that was stable. No way I'm going near a sink hole, there's no telling how much is going to break off or when. I say good job keeping your distance.

[tophcfa]

Originally Posted by DonH57

It's certain the villages didn't advertise it's there.

Dam straight on that, would never be reported in the Daily Fun. Since it wasn’t on a public road, it probably never got picked up by any other news outlets.

[Rwirish]

The opening date has been announced for days.

[DonH57]

Originally Posted by LeRoySmith

I'd be ok getting close to the edge of a funnel shaped hole that was stable. No way I'm going near a sink hole, there's no telling how much is going to break off or when. I say good job keeping your distance.

Oh yeah. No way to determine how far over is caved in. Where this one is if someone fell in no one would probably hear them yell for help. I hope no animals fell in.