Past tense of go is ''went'', I went.... spelunking on my holiday.

go 的过式是“went” ，… … 的假期在洞穴探险。

I am currently spelunking in the Radiolab archives.

目前正在 Radiolab 档馆中探索。

That agent rossi wrote up that I'm still spelunking for.

犯罪现场 仍在深入研究。

I would prefer a headlamp, such as one would use for spelunking.

最好是头戴式照明灯 洞穴探险用的那种。