Negotiators on both sides agreed not to make public the exact terms of the settlement until it is presented to union members tomorrow for ratification, Mr. Naples said.
The company is in the process of selling some of its assets, and the exact amount of the settlement will depend on the sale price.
Asked later about the objection of Ms. Quackenbos, he said the exact amount of any settlement was a matter of private litigation and subject to final court approval.
Initial news reports and the statement from Survival International did not identify the tribe or give the exact location of the settlement, presumably to protect it from unwanted visits.
The two sides have agreed to divide the proceeds from the sale of the painting, which is estimated to be worth up to £18m, though the exact terms of the settlement remain confidential.
Archeologist still haven't settled on the exact purpose of the settlement.
Although the exact terms of the settlement were kept confidential, the joint statement detailed the transfer of the rights to the Lotus and Team Lotus names to Group Lotus's ownership.
The exact terms of the settlement were hammered out during the last week, which featured "almost around the clock" negotiations, lawyers wrote in court papers.
It is difficult to determine the exact dollar amount of settlements, in part because measurement methods differ.
Statements from at least 15 claimants are expected to be read out in the high court on Friday, but the exact size of the settlements are not expected to be revealed.
