I had a strategy in mind that requires aquiring 50 adamantium turn 25-35. I created a huge twin elliptical with 9 competitors and normal strategics quantity. I struggle to understand what technology package I need to rush to be able to see adamantium curiosities (I assume those should be subterranean 1(2) on snow/arid/savanna/steppes where 1 means expedition power and 2 means detection level)? We already posses detection level 2 from the start of the game, don't we? And there is no mentioning of revealing strategics of any tier in a tech tree? So what are the prerequisites? Are those just reaching tier 3 in scientific quadrant same as for uncommon luxuries? 

T2 strats are visisble after unlocking T3 science and exploration quarter.

Mouse over the individual quarter unlocks to find out more.

koxsos wrote:

T2 strats are visisble after unlocking T3 science and exploration quarter.

Mouse over the individual quarter unlocks to find out more.

Seems I just got unlucky then. Thanks!

Well I checked and it actually does not seem to be there anymore. Would you like to write up a bug report?