Looks like the outcome of that trip was you encountered a Bad rock with nothing better to do in its existence than destroy your tire.

On the other hand, since we're dealing with three gold mining ghost town locations, you have to wonder if perhaps that was a Good rock that was actually a nice specimen.

Monte

"Your EYES ... the only 100% accurate form of Discrimination!"
Stinkwater Wells
Trading Post
Metal Detector Evaluations and Product Reviews
'How-To' help for Coin & Jewelry Hunting, Relic Hunting and Useful Techniques.
'Regular-Use Detector Team' are models from: Fisher, Nokta / Makro, Teknetics, Tesoro and White's
'Specialty-Use Detectors' are models from: Compass, Garrett and Teknetics
Pinpointers: Using Nokta / Makro and Uniprobe Pointers.
Headphones: Using Killer B's 'Hornet' and White's Pro Star and Detector Pro's Uniprobe ... All w/'tank style' ear cups.
Recovery Gear: Using White's DigMaster digging tool and Signature Series pouch.Note: Detectors are listed alphabetically by Brand. Models are chosen as desired based on search site conditions.
Some models are assigned for 'Regular-Use' and others are on-hand for 'Specialty Use.'
Additional search coils, mounted on spare lower-rods, are on-hand in my Accessory Coil Tote.

*** All working well today to make memories for tomorrow. ***
monte@stinkwaterwells.com .. or .. monte@ahrps.org
(503) 481-8147