We are doing our research. Teller County and the realtor furnished a few documents; here are 2 images that further describe the Martha A lode. (Hint: Clicking  the images will bring up a larger version of them.)

Martha A lot map
We had originally walked the part of the lot below the BLM access road, which turns out to be the smaller part of the lot. The best building site is on the north (upper) side of the road just east of center. The lot runs north-south, so west is to the left and east to the right.
 
Craig had asked about the BLM land that borders the lot on the east and west. These are irregular parcels, and the best way to visualize them is to look at this map of parcels in the area. Remember, these are old mine claims, laid out to follow “seams” that the miners hoped would provide fortune:

BLM land around the Martha A lode

 The “Last Chance” borders the Martha A to the south, and the “Uncle Sam” to the north. The part we are concerned with is the BLM land to the south-east; the access road to the lot crosses BLM land and we want to be reasonably sure that the BLM will not close this road to vehicular traffic. This would be unlikely, as there is a trailer (with well) on the Uncle Sam parcel, and a full-time house on the 2nd lot north, the one that borders on the Uncle Sam. (That family is the one who plows the road.) In addition, there are lots to the west of the Martha A that can only be reached from this same access road.

Here is a larger image of parcels in the area around the Martha A:

Parcels around the Martha A Lode

We are still doing our research, but have been pre-approved to make an offer. We are waiting a week so we can get current pay stubs to submitt to the credit union that would finance the transaction.

Thats it for now. Thanks for looking in!