Adventure tours for me and Mum 65+

Hi all! As per the post title: my mum was widowed in 2020, and one of the things she always talked about was how when my Dad was ill she never got to explore the world. She loves the idea of backpacking, but it is of course harder for her now that she's older. I am also struggling to find adventure tours that cater to an older crowd where she would feel welcome. The Intrepid/ G Adventure tours all seem to be aimed to 20-30s. She's not fussy about destination, up-for-anything! But activity level needs to be something she can manage. For context: she is very fit and nimble for her age (66), she's Filipino so she's naturally gifted with those good old Asian longevity genes. She is out in her allotment every day digging and pushing her wheelbarrow around for hours, so i'm not worried about light activity.